java.lang.Object
- chemaxon.calculations.Ring

All Implemented Interfaces:

chemaxon.license.Licensable
```
@PublicAPI
public class Ring
extends Object
implements chemaxon.license.Licensable
```
The ring class provides information of the ring types in a molecule.

Since:

Marvin 5.5

Constructor Summary

Constructors
Constructor Description

Ring()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`aliphaticAtomCount()`	Calculates the number of all aliphatic atoms in the molecule excluding hydrogens.
`int`	`aliphaticBondCount()`	Calculates the number of all aliphatic bonds in the molecule excluding bonds connected to hydrogens.
`int`	`aliphaticRingCount()`	Calculates the number of aliphatic ring systems of the molecule.
`int`	`aliphaticRingCount(int size)`	Calculates the number of aliphatic rings (SSSR smallest set of smallest rings) of a given size in the molecule.
`int[][]`	`aliphaticRings()`	Identifies the aliphatic rings in the molecule.
`int[][]`	`aliphaticRings(int size)`	Identifies aliphatic rings in the molecule having a given size (number of atoms).
`int`	`aromaticAtomCount()`	Calculates the number of all aromatic atoms in the molecule.
`int`	`aromaticBondCount()`	Calculates the number of all aromatic bonds in the molecule.
`int`	`aromaticRingCount()`	Calculates the number of all aromatic ring systems in the molecule (SSSR).
`int`	`aromaticRingCount(int size)`	Calculates the number of aromatic rings (SSSR smallest set of smallest rings) of a given size in the molecule.
`int[][]`	`aromaticRings()`	Identifies the aromatic rings in the molecule.
`int[][]`	`aromaticRings(int size)`	Indentifies aromatic rings in the molecule having a given size (number of rings).
`int`	`carboaliphaticRingCount()`	Calculates the number of carboaliphatic rings in the molecule (aliphatic rings containing carbon atoms only).
`int`	`carboaromaticRingCount()`	Calculates the number of carboaromatic rings in the molecule (aromatic rings containing carbon atoms only).
`int`	`carboRingCount()`	Calculates the number of carbocyclic rings in the molecule (rings containing carbon atoms only).
`int`	`carboRingCount(int size)`	Calculates the number of carbocyclic rings in the molecule (rings containing at least a non-carbon atom).
`int[][]`	`carboRings()`	Identifies carbocyclic rings in the molecule (rings containing carbon atoms only).
`int[][]`	`carboRings(int size)`	Identifies carbocyclic rings in the molecule (rings containing carbon atoms only) having the given number of atoms.
`int`	`chainAtomCount()`	Calculates the number of chain atoms in the molecule excluding hydrogens.
`int`	`chainBondCount()`	Calculates the number of chain bonds in the molecule excluding bonds of hydrogen atoms.
`int`	`fusedAliphaticRingCount()`	Calculates the number of fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule.
`int`	`fusedAliphaticRingCount(int size)`	Calculates the number of fused aliphatic rings in the molecule (rings s).
`int[][]`	`fusedAliphaticRings()`	Identifies fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule.
`int[][]`	`fusedAliphaticRings(int size)`	Identifies fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule having the given size (number of atoms).
`int`	`fusedAromaticRingCount()`	Calculates the number of fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule.
`int`	`fusedAromaticRingCount(int size)`	Calculates the number of fused aromatic rings in the molecule (rings s).
`int[][]`	`fusedAromaticRings()`	Identifies fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule.
`int[][]`	`fusedAromaticRings(int size)`	Identifies fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule having the given size (number of atoms).
`int`	`fusedRingCount()`	Calculates the number of fused rings (SSSR smallest set of smallest rings) in the molecule.
`MoleculeGraph`	`getMolecule()`	Retrieves the input molecule
`int`	`heteroaliphaticRingCount()`	Calculates the number of aliphatic heterocyclic rings in the molecule (aliphatic rings containing at least a non-carbon atom).
`int`	`heteroaliphaticRingCount(int size)`	Calculates the number of aliphatic heterocyclic rings in the molecule (aliphatic rings containing at least a non-carbon atom) having a given size (number of atoms).
`int[][]`	`heteroaliphaticRings()`	Identifies heteroaliphatic rings in the molecule (aliphatic rings containing at least a non-carbon atom).
`int[][]`	`heteroaliphaticRings(int size)`	Identifies heteroaliphatic rings in the molecule (aliphatic rings containing at least a non-carbon atom) having a given size (number of atoms).
`int`	`heteroaromaticRingCount()`	Calculates the number of aromatic heterocyclic rings in the molecule (aromatic rings containing non-carbon atoms).
`int`	`heteroaromaticRingCount(int size)`	Calculates the number of aromatic heterocyclic rings in the molecule (aromatic rings containing at least a non-carbon atom) having a given size (number of atoms).
`int[][]`	`heteroaromaticRings()`	Identifies heteroaromatic rings in the molecule (aromatic rings containing at least a non-carbon atom).
`int[][]`	`heteroaromaticRings(int size)`	Identifies heteroaromatic rings in the molecule (aromatic rings containing at least a non-carbon atom) having a given size (number of atoms).
`int`	`heteroRingCount()`	Calculates the number of heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
`int`	`heteroRingCount(int size)`	Calculates the number of heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
`int[][]`	`heteroRings()`	Identifies heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
`int[][]`	`heteroRings(int size)`	Indentifies hetero rings in the molecule having a given size (number of atoms).
`boolean`	`isAliphaticAtom(int a)`	Determines if an atom is not a member of an aromatic ring.
`boolean`	`isAliphaticBond(int b)`	Determines if a bond is not a member of an aromatic ring.
`boolean`	`isAromaticAtom(int a)`	Determines if an atom is a member of an aromatic ring.
`boolean`	`isAromaticBond(int b)`	Determines if a bond is a member of an aromatic ring.
`boolean`	`isChainAtom(int a)`	Determines if an atom a ring bond or a chain bond.
`boolean`	`isChainBond(int b)`	Determines if a bond is a ring bond or a chain bond.
`boolean`	`isLicensed()`	This method is for internal use only.
`boolean`	`isRingAtom(int a)`	Determines if an atom a ring bond or a chain bond.
`boolean`	`isRingBond(int b)`	Determines if a bond is a ring bond or a chain bond.
`int[]`	`largestRing()`	Identifies the atoms of the largest ring (number of atoms) in the molecule.
`int`	`largestRingSize()`	Calculates the size of the largest ring in the molecule (SSSR based).
`int`	`largestRingSizeOfAtom(int a)`	Calculates the size of the largest ring an atom is a member of (SSSR based).
`int[]`	`largestRingSystem()`	Identifies the atoms of the largest ring system (number of rings) in the molecule.
`int`	`largestRingSystemSize()`	Calculates the size of the largest ring system (number of rings) in the molecule.
`int`	`ringAtomCount()`	Calculates the number of ring atoms in the molecule.
`int`	`ringBondCount()`	Calculates the number of ring bonds in the molecule.
`int`	`ringCount()`	Calculates the number of rings (SSSR smallest set of smallest rings) in the molecule.
`int`	`ringCount(int size)`	Calculates the number of rings (SSSR smallest set of smallest rings) of a given size in the molecule.
`int`	`ringCountOfAtom(int a)`	Calculates the number of rings (SSSR smallest set of smallest rings) an atom is part of.
`int[][]`	`rings()`	Identifies the rings in the molecule.
`int[][]`	`rings(int size)`	Identifies rings in the molecule having a given size.
`int`	`ringSystemCount()`	Calculates the number of ring systems.
`int`	`ringSystemCount(int size)`	Identifies ring systems having a given size (number of rings) in the molecule.
`int[][]`	`ringSystems()`	Identifies the ring systems in the molecule.
`int[][]`	`ringSystems(int size)`	Indentifies the ring systems in the molecule having a given size (number of rings).
`void`	`setLicenseEnvironment(String env)`	This method is for internal use only.
`void`	`setMolecule(MoleculeGraph mol)`	Specifies a molecule to calculate with.
`void`	`setMolecule(MoleculeGraph mol, int aromatizationMode)`	Specifies a molecule to calculate with.
`int[]`	`smallestRing()`	Identifies the smallest ring (number of atoms) in the molecule.
`int`	`smallestRingSize()`	Calculates the size of the smallest ring in the molecule.
`int`	`smallestRingSizeOfAtom(int a)`	Calculates the size of the smallest ring an atom is a member of.
`int[]`	`smallestRingSystem()`	Identifies the smallest ring system (number of rings) in the molecule.
`int`	`smallestRingSystemSize()`	Calculates the size of the smallest ring system (number of rings) in the molecule.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Ring
```
public Ring()
```
- Method Detail
  - getMolecule
```
public MoleculeGraph getMolecule()
```
    Retrieves the input molecule
    
    Returns:
    
    the molecule to calculate with
  - setMolecule
```
public void setMolecule(MoleculeGraph mol)
```
    Specifies a molecule to calculate with.
    
    Parameters:
    
    mol - the molecule to calculate with
  - setMolecule
```
public void setMolecule(MoleculeGraph mol,
                        int aromatizationMode)
```
    Specifies a molecule to calculate with.
    Parameters:
    
    mol - the molecule to calculate with
    
    aromatizationMode - specifies the algorithm for aromatization. Possible values:
    
    AROM_BASIC - Basic aromatization
    
    AROM_GENERAL - General (Daylight compatible) aromatization
    
    AROM_LOOSE - Loose aromatization
  - aliphaticAtomCount
```
public int aliphaticAtomCount()
```
    Calculates the number of all aliphatic atoms in the molecule excluding hydrogens.
    
    Returns:
    
    number of aliphatic atoms in the molecule
  - aliphaticBondCount
```
public int aliphaticBondCount()
```
    Calculates the number of all aliphatic bonds in the molecule excluding bonds connected to hydrogens.
    
    Returns:
    
    number of aliphatic bonds in the molecule
  - aliphaticRingCount
```
public int aliphaticRingCount()
```
    Calculates the number of aliphatic ring systems of the molecule. Any ring containing an aliphatic atom/bond is considered aliphatic. Thus, aliphatic rings can contain some aromatic bonds too.
    
    Returns:
    
    number of aliphatic rings in the molecule
  - aliphaticRingCount
```
public int aliphaticRingCount(int size)
```
    Calculates the number of aliphatic rings (SSSR smallest set of smallest rings) of a given size in the molecule.
    
    Parameters:
    
    size - size of the ring to count
    
    Returns:
    
    number of aliphatic rings with the specified size in the molecule
    
    Since:
    
    version 5.1
  - aliphaticRings
```
public int[][] aliphaticRings()
```
    Identifies the aliphatic rings in the molecule.
    
    Returns:
    
    aliphatic rings of the molecule (null if the molecule does not contain aliphatic rings)
    
    Since:
    
    version 5.2
  - aliphaticRings
```
public int[][] aliphaticRings(int size)
```
    Identifies aliphatic rings in the molecule having a given size (number of atoms).
    
    Parameters:
    
    size - size of the aliphatic rings to return
    
    Returns:
    
    aliphatic rings in the molecule having the given size (null if the molecule does not contain aliphatic rings)
    
    Since:
    
    version 5.2
  - aromaticAtomCount
```
public int aromaticAtomCount()
```
    Calculates the number of all aromatic atoms in the molecule.
    
    Returns:
    
    number of aromatic atoms in the molecule
  - aromaticBondCount
```
public int aromaticBondCount()
```
    Calculates the number of all aromatic bonds in the molecule.
    
    Returns:
    
    number of aromatic bonds in the molecule
  - aromaticRingCount
```
public int aromaticRingCount()
```
    Calculates the number of all aromatic ring systems in the molecule (SSSR). Sometimes, aromatic rings are not part of the standard SSSR ring set. Thus, the sum of the aliphatic and aromatic rings can be greater than the number of rings.
    
    Returns:
    
    number of aromatic rings in the molecule
  - aromaticRingCount
```
public int aromaticRingCount(int size)
```
    Calculates the number of aromatic rings (SSSR smallest set of smallest rings) of a given size in the molecule.
    
    Parameters:
    
    size - size of the ring to count
    
    Returns:
    
    number of aromatic rings with the specified size in the molecule
    
    Since:
    
    version 5.1
  - aromaticRings
```
public int[][] aromaticRings()
```
    Identifies the aromatic rings in the molecule.
    
    Returns:
    
    aromatic rings of the molecule (null if the molecule is aliphatic)
    
    Since:
    
    version 5.2
  - aromaticRings
```
public int[][] aromaticRings(int size)
```
    Indentifies aromatic rings in the molecule having a given size (number of rings).
    
    Parameters:
    
    size - size of the aromatic rings to return
    
    Returns:
    
    aromatic rings in the molecule having the given size (null if the molecule is aliphatic or contains different sized aromatic rings only)
    
    Since:
    
    version 5.2
  - carboaliphaticRingCount
```
public int carboaliphaticRingCount()
```
    Calculates the number of carboaliphatic rings in the molecule (aliphatic rings containing carbon atoms only).
    
    Returns:
    
    number of carboaliphatic rings
  - carboaromaticRingCount
```
public int carboaromaticRingCount()
```
    Calculates the number of carboaromatic rings in the molecule (aromatic rings containing carbon atoms only).
    
    Returns:
    
    number of carboaromatic rings
  - carboRingCount
```
public int carboRingCount()
```
    Calculates the number of carbocyclic rings in the molecule (rings containing carbon atoms only).
    
    Returns:
    
    number of carbocyclic rings
  - carboRingCount
```
public int carboRingCount(int size)
```
    Calculates the number of carbocyclic rings in the molecule (rings containing at least a non-carbon atom).
    
    Parameters:
    
    size - size of the rings to count
    
    Returns:
    
    number of carbocyclic rings with the given size
    
    Since:
    
    version 5.2
  - carboRings
```
public int[][] carboRings()
```
    Identifies carbocyclic rings in the molecule (rings containing carbon atoms only).
    
    Returns:
    
    carbocyclic rings (null if no carbocyclic ring found in the molecule.
    
    Since:
    
    version 5.2
  - carboRings
```
public int[][] carboRings(int size)
```
    Identifies carbocyclic rings in the molecule (rings containing carbon atoms only) having the given number of atoms.
    
    Parameters:
    
    size - size of the rings to count
    
    Returns:
    
    carbocyclic rings with the given size (null if no carbocyclic ring found in the molecule.
    
    Since:
    
    version 5.2
  - chainAtomCount
```
public int chainAtomCount()
```
    Calculates the number of chain atoms in the molecule excluding hydrogens.
    
    Returns:
    
    number of chain atoms in the molecule
  - chainBondCount
```
public int chainBondCount()
```
    Calculates the number of chain bonds in the molecule excluding bonds of hydrogen atoms.
    
    Returns:
    
    number of chain bonds in the molecule
  - fusedAliphaticRingCount
```
public int fusedAliphaticRingCount()
```
    Calculates the number of fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule.
    
    Returns:
    
    number of fused aliphatic rings in the molecule
  - fusedAliphaticRingCount
```
public int fusedAliphaticRingCount(int size)
```
    Calculates the number of fused aliphatic rings in the molecule (rings s).
    
    Parameters:
    
    size - size of the fused aliphatic rings to count
    
    Returns:
    
    number of fused aliphatic rings having the given size
    
    Since:
    
    version 5.2
  - fusedAliphaticRings
```
public int[][] fusedAliphaticRings()
```
    Identifies fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule.
    
    Returns:
    
    atom indexes of the fused aliphatic rings in the molecule
    
    Since:
    
    version 5.2
  - fusedAliphaticRings
```
public int[][] fusedAliphaticRings(int size)
```
    Identifies fused aliphatic rings (SSSR smallest set of smallest aliphatic rings) in the molecule having the given size (number of atoms).
    
    Parameters:
    
    size - size of the fused aliphatic rings to count
    
    Returns:
    
    atom indexes of the fused aliphatic rings in the molecule having the given number of atoms
    
    Since:
    
    version 5.2
  - fusedAromaticRingCount
```
public int fusedAromaticRingCount()
```
    Calculates the number of fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule.
    
    Returns:
    
    number of fused aromatic rings in the molecule
  - fusedAromaticRingCount
```
public int fusedAromaticRingCount(int size)
```
    Calculates the number of fused aromatic rings in the molecule (rings s).
    
    Parameters:
    
    size - size of the fused aromatic rings to count
    
    Returns:
    
    number of fused aromatic rings having the given size
    
    Since:
    
    version 5.2
  - fusedAromaticRings
```
public int[][] fusedAromaticRings()
```
    Identifies fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule.
    
    Returns:
    
    atom indexes of the fused aromatic rings in the molecule
    
    Since:
    
    version 5.2
  - fusedAromaticRings
```
public int[][] fusedAromaticRings(int size)
```
    Identifies fused aromatic rings (SSSR smallest set of smallest aromatic rings) in the molecule having the given size (number of atoms).
    
    Parameters:
    
    size - size of the fused aromatic rings to count
    
    Returns:
    
    atom indexes of the fused aromatic rings in the molecule
    
    Since:
    
    version 5.2
  - fusedRingCount
```
public int fusedRingCount()
```
    Calculates the number of fused rings (SSSR smallest set of smallest rings) in the molecule.
    
    Returns:
    
    number of fused rings in the molecule
  - heteroaliphaticRingCount
```
public int heteroaliphaticRingCount()
```
    Calculates the number of aliphatic heterocyclic rings in the molecule (aliphatic rings containing at least a non-carbon atom).
    
    Returns:
    
    number of heteroaliphatic rings
    
    Since:
    
    version 5.2
  - heteroaliphaticRingCount
```
public int heteroaliphaticRingCount(int size)
```
    Calculates the number of aliphatic heterocyclic rings in the molecule (aliphatic rings containing at least a non-carbon atom) having a given size (number of atoms).
    
    Parameters:
    
    size - size of the heteroaliphatc rings to count
    
    Returns:
    
    number of heteroaliphatic rings having the given size
    
    Since:
    
    version 5.2
  - heteroaliphaticRings
```
public int[][] heteroaliphaticRings()
```
    Identifies heteroaliphatic rings in the molecule (aliphatic rings containing at least a non-carbon atom).
    
    Returns:
    
    atom indexes of heteroaliphatic rings
    
    Since:
    
    version 5.2
  - heteroaliphaticRings
```
public int[][] heteroaliphaticRings(int size)
```
    Identifies heteroaliphatic rings in the molecule (aliphatic rings containing at least a non-carbon atom) having a given size (number of atoms).
    
    Parameters:
    
    size - size of the heteroaliphatic rings to count
    
    Returns:
    
    heteroaliphatic rings having the given size
    
    Since:
    
    version 5.2
  - heteroaromaticRingCount
```
public int heteroaromaticRingCount()
```
    Calculates the number of aromatic heterocyclic rings in the molecule (aromatic rings containing non-carbon atoms).
    
    Returns:
    
    number of aromatic heterocyclic rings
  - heteroaromaticRingCount
```
public int heteroaromaticRingCount(int size)
```
    Calculates the number of aromatic heterocyclic rings in the molecule (aromatic rings containing at least a non-carbon atom) having a given size (number of atoms).
    
    Parameters:
    
    size - size of the heteroaromatic rings to count
    
    Returns:
    
    number of heteroaromatic rings having the given size
    
    Since:
    
    version 5.2
  - heteroaromaticRings
```
public int[][] heteroaromaticRings()
```
    Identifies heteroaromatic rings in the molecule (aromatic rings containing at least a non-carbon atom).
    
    Returns:
    
    heteroaromatic rings
    
    Since:
    
    version 5.2
  - heteroaromaticRings
```
public int[][] heteroaromaticRings(int size)
```
    Identifies heteroaromatic rings in the molecule (aromatic rings containing at least a non-carbon atom) having a given size (number of atoms).
    
    Parameters:
    
    size - size of the heteroaromatic rings to count
    
    Returns:
    
    heteroaromatic rings having the given size
    
    Since:
    
    version 5.2
  - heteroRingCount
```
public int heteroRingCount()
```
    Calculates the number of heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
    
    Returns:
    
    number of heterocyclic rings
  - heteroRingCount
```
public int heteroRingCount(int size)
```
    Calculates the number of heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
    
    Parameters:
    
    size - size of the rings to count
    
    Returns:
    
    number of heterocyclic rings
    
    Since:
    
    version 5.2
  - heteroRings
```
public int[][] heteroRings()
```
    Identifies heterocyclic rings in the molecule (rings containing at least a non-carbon atom).
    
    Returns:
    
    heterocyclic rings (null of no heterocyclic ring found in the molecule.
    
    Since:
    
    version 5.2
  - heteroRings
```
public int[][] heteroRings(int size)
```
    Indentifies hetero rings in the molecule having a given size (number of atoms).
    
    Parameters:
    
    size - size of the hetero rings to return (zero returns all)
    
    Returns:
    
    hetero rings in the molecule having the given size (null if the molecule does not contain hetero rings)
    
    Since:
    
    version 5.2
  - isAliphaticAtom
```
public boolean isAliphaticAtom(int a)
```
    Determines if an atom is not a member of an aromatic ring.
    
    Parameters:
    
    a - index of the atom
    
    Returns:
    
    true if the atom is aliphatic.
  - isAromaticAtom
```
public boolean isAromaticAtom(int a)
```
    Determines if an atom is a member of an aromatic ring.
    
    Parameters:
    
    a - index of the atom
    
    Returns:
    
    true if the atom is aromatic.
  - isAliphaticBond
```
public boolean isAliphaticBond(int b)
```
    Determines if a bond is not a member of an aromatic ring.
    
    Parameters:
    
    b - index of the bond
    
    Returns:
    
    true if the bond is aliphatic.
  - isAromaticBond
```
public boolean isAromaticBond(int b)
```
    Determines if a bond is a member of an aromatic ring.
    
    Parameters:
    
    b - index of the bond
    
    Returns:
    
    true if the bond is aromatic.
  - isChainAtom
```
public boolean isChainAtom(int a)
```
    Determines if an atom a ring bond or a chain bond.
    
    Parameters:
    
    a - index of the atom
    
    Returns:
    
    true if the atom is a chain atom (has no ring bonds).
  - isChainBond
```
public boolean isChainBond(int b)
```
    Determines if a bond is a ring bond or a chain bond.
    
    Parameters:
    
    b - index of the bond
    
    Returns:
    
    true if the bond is a chain bond, false if ring bond
  - isRingAtom
```
public boolean isRingAtom(int a)
```
    Determines if an atom a ring bond or a chain bond.
    
    Parameters:
    
    a - index of the atom
    
    Returns:
    
    true if the atom is a ring atom (has a ring bond).
  - isRingBond
```
public boolean isRingBond(int b)
```
    Determines if a bond is a ring bond or a chain bond.
    
    Parameters:
    
    b - index of the bond
    
    Returns:
    
    true if the bond is a ring bond, false if chain bond
  - largestRing
```
public int[] largestRing()
```
    Identifies the atoms of the largest ring (number of atoms) in the molecule.
    
    Returns:
    
    atom indexes of the largest ring in the molecule (null when acyclic)
    
    Since:
    
    version 5.2
  - largestRingSize
```
public int largestRingSize()
```
    Calculates the size of the largest ring in the molecule (SSSR based).
    
    Returns:
    
    size of the largest ring in the molecule (0 when acyclic)
  - largestRingSizeOfAtom
```
public int largestRingSizeOfAtom(int a)
```
    Calculates the size of the largest ring an atom is a member of (SSSR based).
    
    Returns:
    
    size of the largest ring (0 when atom is not a member of a ring)
  - largestRingSystem
```
public int[] largestRingSystem()
```
    Identifies the atoms of the largest ring system (number of rings) in the molecule.
    
    Returns:
    
    atom indexes of the largest ring system in the molecule (null when acyclic)
    
    Since:
    
    version 5.2
  - largestRingSystemSize
```
public int largestRingSystemSize()
```
    Calculates the size of the largest ring system (number of rings) in the molecule.
    
    Returns:
    
    size of the largest ring system in the molecule (0 when acyclic)
    
    Since:
    
    version 5.1
  - ringAtomCount
```
public int ringAtomCount()
```
    Calculates the number of ring atoms in the molecule.
    
    Returns:
    
    number of ring atoms in the molecule
  - ringBondCount
```
public int ringBondCount()
```
    Calculates the number of ring bonds in the molecule.
    
    Returns:
    
    number of ring bonds in the molecule
  - ringCount
```
public int ringCount()
```
    Calculates the number of rings (SSSR smallest set of smallest rings) in the molecule.
    
    Returns:
    
    number of rings in the molecule
  - ringCount
```
public int ringCount(int size)
```
    Calculates the number of rings (SSSR smallest set of smallest rings) of a given size in the molecule.
    
    Parameters:
    
    size - size of the ring to count
    
    Returns:
    
    number of rings having the spedified size
  - ringCountOfAtom
```
public int ringCountOfAtom(int a)
```
    Calculates the number of rings (SSSR smallest set of smallest rings) an atom is part of.
    
    Parameters:
    
    a - index of the atom
    
    Returns:
    
    number of rings the atom is a member of
  - rings
```
public int[][] rings()
```
    Identifies the rings in the molecule.
    
    Returns:
    
    rings of the molecule (null if the molecule is acyclic)
    
    Since:
    
    version 5.2
  - rings
```
public int[][] rings(int size)
```
    Identifies rings in the molecule having a given size.
    
    Parameters:
    
    size - size of the ring systems to return
    
    Returns:
    
    rings of the molecule having the given size (null if the molecule is acyclic or contains different rings only)
    
    Since:
    
    version 5.2
  - ringSystemCount
```
public int ringSystemCount()
```
    Calculates the number of ring systems. Fused and spiro rings belong to one ring system.
    
    Returns:
    
    number of ring systems in the molecule
    
    Since:
    
    version 5.1
  - ringSystemCount
```
public int ringSystemCount(int size)
```
    Identifies ring systems having a given size (number of rings) in the molecule. Fused and spiro rings belong to one ring system.
    
    Parameters:
    
    size - size of the ring to count
    
    Returns:
    
    number of ring systems with the specified size in the molecule
    
    Since:
    
    version 5.1
  - ringSystems
```
public int[][] ringSystems()
```
    Identifies the ring systems in the molecule. Fused and spiro rings belong to one ring system.
    
    Returns:
    
    ring systems in the molecule (null if the molecule is acyclic)
    
    Since:
    
    version 5.2
  - ringSystems
```
public int[][] ringSystems(int size)
```
    Indentifies the ring systems in the molecule having a given size (number of rings). Fused and spiro rings belong to one ring system.
    
    Parameters:
    
    size - size of the ring systems to return
    
    Returns:
    
    ring systems in the molecule having the given size (null if the molecule is acyclic or contains different rings only)
    
    Since:
    
    version 5.2
  - smallestRing
```
public int[] smallestRing()
```
    Identifies the smallest ring (number of atoms) in the molecule.
    
    Returns:
    
    atom indexes of the smallest ring in the molecule (null when acyclic)
    
    Since:
    
    version 5.2
  - smallestRingSize
```
public int smallestRingSize()
```
    Calculates the size of the smallest ring in the molecule.
    
    Returns:
    
    size of the smallest ring in the molecule (0 when acyclic)
  - smallestRingSystem
```
public int[] smallestRingSystem()
```
    Identifies the smallest ring system (number of rings) in the molecule.
    
    Returns:
    
    atom indexes of the smallest ring system in the molecule (null when acyclic)
    
    Since:
    
    version 5.2
  - smallestRingSystemSize
```
public int smallestRingSystemSize()
```
    Calculates the size of the smallest ring system (number of rings) in the molecule.
    
    Returns:
    
    size of the smallest ring system in the molecule (0 when acyclic)
    
    Since:
    
    version 5.1
  - smallestRingSizeOfAtom
```
public int smallestRingSizeOfAtom(int a)
```
    Calculates the size of the smallest ring an atom is a member of.
    
    Returns:
    
    size of the smallest ring (0 when atom is not a member of a ring)
  - setLicenseEnvironment
```
public void setLicenseEnvironment(String env)
```
    This method is for internal use only.
    
    Specified by:
    
    setLicenseEnvironment in interface chemaxon.license.Licensable
  - isLicensed
```
public boolean isLicensed()
```
    This method is for internal use only.
    
    Specified by:
    
    isLicensed in interface chemaxon.license.Licensable

Class Ring

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Ring

Method Detail

getMolecule

setMolecule

setMolecule

aliphaticAtomCount

aliphaticBondCount

aliphaticRingCount

aliphaticRingCount

aliphaticRings

aliphaticRings

aromaticAtomCount

aromaticBondCount

aromaticRingCount

aromaticRingCount

aromaticRings

aromaticRings

carboaliphaticRingCount

carboaromaticRingCount

carboRingCount

carboRingCount

carboRings

carboRings

chainAtomCount

chainBondCount

fusedAliphaticRingCount

fusedAliphaticRingCount

fusedAliphaticRings

fusedAliphaticRings

fusedAromaticRingCount

fusedAromaticRingCount

fusedAromaticRings

fusedAromaticRings

fusedRingCount

heteroaliphaticRingCount

heteroaliphaticRingCount

heteroaliphaticRings

heteroaliphaticRings

heteroaromaticRingCount

heteroaromaticRingCount

heteroaromaticRings

heteroaromaticRings

heteroRingCount

heteroRingCount

heteroRings

heteroRings

isAliphaticAtom

isAromaticAtom

isAliphaticBond

isAromaticBond

isChainAtom

isChainBond

isRingAtom

isRingBond

largestRing

largestRingSize

largestRingSizeOfAtom

largestRingSystem

largestRingSystemSize

ringAtomCount

ringBondCount

ringCount

ringCount

ringCountOfAtom

rings

rings

ringSystemCount

ringSystemCount

ringSystems

ringSystems

smallestRing

smallestRingSize

smallestRingSystem

smallestRingSystemSize

smallestRingSizeOfAtom