java.lang.Object
- org.jgrapht.graph.DefaultGraphType

All Implemented Interfaces:

Serializable, GraphType
```
public class DefaultGraphType
extends Object
implements GraphType, Serializable
```
Default implementation of the graph type.
The graph type describes various properties of a graph such as whether it is directed, undirected or mixed, whether it contain self-loops (a self-loop is an edge where the source vertex is the same as the target vertex), whether it contain multiple (parallel) edges (multiple edges which connect the same pair of vertices) and whether it is weighted or not.
The type of a graph can be queried on runtime using method Graph.getType(). This way, for example, an algorithm can have different behavior based on whether the input graph is directed or undirected, etc.

Author:

Dimitrios Michail

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class DefaultGraphType.Builder
A builder for DefaultGraphType.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`GraphType`	`asDirected()`	Create a directed variant of the current graph type.
`GraphType`	`asMixed()`	Create a mixed variant of the current graph type.
`GraphType`	`asModifiable()`	Create a modifiable variant of the current graph type.
`GraphType`	`asUndirected()`	Create an undirected variant of the current graph type.
`GraphType`	`asUnmodifiable()`	Create an unmodifiable variant of the current graph type.
`GraphType`	`asUnweighted()`	Create an unweighted variant of the current graph type.
`GraphType`	`asWeighted()`	Create a weighted variant of the current graph type.
`static DefaultGraphType`	`dag()`	A directed acyclic graph.
`static DefaultGraphType`	`directedMultigraph()`	A directed multigraph type.
`static DefaultGraphType`	`directedPseudograph()`	A directed pseudograph type.
`static DefaultGraphType`	`directedSimple()`	A directed simple graph type.
`boolean`	`isAllowingCycles()`	Returns `true` if and only if cycles are allowed in this graph.
`boolean`	`isAllowingMultipleEdges()`	Returns `true` if and only if multiple (parallel) edges are allowed in this graph.
`boolean`	`isAllowingSelfLoops()`	Returns `true` if and only if self-loops are allowed in this graph.
`boolean`	`isDirected()`	Returns true if all edges of the graph are directed, false otherwise.
`boolean`	`isMixed()`	Returns true if the graph contain both directed and undirected edges, false otherwise.
`boolean`	`isModifiable()`	Returns `true` if the graph is modifiable, `false` otherwise.
`boolean`	`isMultigraph()`	Returns `true` if the graph is a multigraph, `false` otherwise.
`boolean`	`isPseudograph()`	Returns `true` if the graph is a pseudograph, `false` otherwise.
`boolean`	`isSimple()`	Returns `true` if the graph is simple, `false` otherwise.
`boolean`	`isUndirected()`	Returns true if all edges of the graph are undirected, false otherwise.
`boolean`	`isWeighted()`	Returns `true` if and only if the graph supports edge weights.
`static DefaultGraphType`	`mixed()`	A mixed graph type.
`static DefaultGraphType`	`multigraph()`	A multigraph type.
`static DefaultGraphType`	`pseudograph()`	A pseudograph type.
`static DefaultGraphType`	`simple()`	A simple graph type.
`String`	`toString()`

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

- Method Detail
  - isDirected
```
public boolean isDirected()
```
    Description copied from interface: GraphType
    
    Returns true if all edges of the graph are directed, false otherwise.
    
    Specified by:
    
    isDirected in interface GraphType
    
    Returns:
    
    true if all edges of the graph are directed, false otherwise
  - isUndirected
```
public boolean isUndirected()
```
    Description copied from interface: GraphType
    
    Returns true if all edges of the graph are undirected, false otherwise.
    
    Specified by:
    
    isUndirected in interface GraphType
    
    Returns:
    
    true if all edges of the graph are undirected, false otherwise
  - isMixed
```
public boolean isMixed()
```
    Description copied from interface: GraphType
    
    Returns true if the graph contain both directed and undirected edges, false otherwise.
    
    Specified by:
    
    isMixed in interface GraphType
    
    Returns:
    
    true if the graph contain both directed and undirected edges, false otherwise
  - isAllowingMultipleEdges
```
public boolean isAllowingMultipleEdges()
```
    Description copied from interface: GraphType
    
    Returns true if and only if multiple (parallel) edges are allowed in this graph. The meaning of multiple edges is that there can be many edges going from vertex v1 to vertex v2.
    
    Specified by:
    
    isAllowingMultipleEdges in interface GraphType
    
    Returns:
    
    true if and only if multiple (parallel) edges are allowed.
  - isAllowingSelfLoops
```
public boolean isAllowingSelfLoops()
```
    Description copied from interface: GraphType
    
    Returns true if and only if self-loops are allowed in this graph. A self loop is an edge that its source and target vertices are the same.
    
    Specified by:
    
    isAllowingSelfLoops in interface GraphType
    
    Returns:
    
    true if and only if graph self-loops are allowed.
  - isWeighted
```
public boolean isWeighted()
```
    Description copied from interface: GraphType
    
    Returns true if and only if the graph supports edge weights.
    
    Specified by:
    
    isWeighted in interface GraphType
    
    Returns:
    
    true if the graph supports edge weights, false otherwise.
  - isAllowingCycles
```
public boolean isAllowingCycles()
```
    Description copied from interface: GraphType
    
    Returns true if and only if cycles are allowed in this graph.
    
    Specified by:
    
    isAllowingCycles in interface GraphType
    
    Returns:
    
    true if and only if graph cycles are allowed.
  - isModifiable
```
public boolean isModifiable()
```
    Description copied from interface: GraphType
    
    Returns true if the graph is modifiable, false otherwise.
    
    Specified by:
    
    isModifiable in interface GraphType
    
    Returns:
    
    true if the graph is modifiable, false otherwise
  - isSimple
```
public boolean isSimple()
```
    Description copied from interface: GraphType
    
    Returns true if the graph is simple, false otherwise.
    
    Specified by:
    
    isSimple in interface GraphType
    
    Returns:
    
    true if the graph is simple, false otherwise
  - isPseudograph
```
public boolean isPseudograph()
```
    Description copied from interface: GraphType
    
    Returns true if the graph is a pseudograph, false otherwise.
    
    Specified by:
    
    isPseudograph in interface GraphType
    
    Returns:
    
    true if the graph is a pseudograph, false otherwise
  - isMultigraph
```
public boolean isMultigraph()
```
    Description copied from interface: GraphType
    
    Returns true if the graph is a multigraph, false otherwise.
    
    Specified by:
    
    isMultigraph in interface GraphType
    
    Returns:
    
    true if the graph is a multigraph, false otherwise
  - asDirected
```
public GraphType asDirected()
```
    Description copied from interface: GraphType
    
    Create a directed variant of the current graph type.
    
    Specified by:
    
    asDirected in interface GraphType
    
    Returns:
    
    a directed variant of the current graph type
  - asUndirected
```
public GraphType asUndirected()
```
    Description copied from interface: GraphType
    
    Create an undirected variant of the current graph type.
    
    Specified by:
    
    asUndirected in interface GraphType
    
    Returns:
    
    an undirected variant of the current graph type
  - asMixed
```
public GraphType asMixed()
```
    Description copied from interface: GraphType
    
    Create a mixed variant of the current graph type.
    
    Specified by:
    
    asMixed in interface GraphType
    
    Returns:
    
    a mixed variant of the current graph type
  - asUnweighted
```
public GraphType asUnweighted()
```
    Description copied from interface: GraphType
    
    Create an unweighted variant of the current graph type.
    
    Specified by:
    
    asUnweighted in interface GraphType
    
    Returns:
    
    an unweighted variant of the current graph type
  - asWeighted
```
public GraphType asWeighted()
```
    Description copied from interface: GraphType
    
    Create a weighted variant of the current graph type.
    
    Specified by:
    
    asWeighted in interface GraphType
    
    Returns:
    
    a weighted variant of the current graph type
  - asModifiable
```
public GraphType asModifiable()
```
    Description copied from interface: GraphType
    
    Create a modifiable variant of the current graph type.
    
    Specified by:
    
    asModifiable in interface GraphType
    
    Returns:
    
    a modifiable variant of the current graph type
  - asUnmodifiable
```
public GraphType asUnmodifiable()
```
    Description copied from interface: GraphType
    
    Create an unmodifiable variant of the current graph type.
    
    Specified by:
    
    asUnmodifiable in interface GraphType
    
    Returns:
    
    a unmodifiable variant of the current graph type
  - simple
```
public static DefaultGraphType simple()
```
    A simple graph type. An undirected graph for which at most one edge connects any two vertices, and self-loops are not permitted.
    
    Returns:
    
    a simple graph type
  - multigraph
```
public static DefaultGraphType multigraph()
```
    A multigraph type. A non-simple undirected graph in which no self-loops are permitted, but multiple edges between any two vertices are.
    
    Returns:
    
    a multigraph type
  - pseudograph
```
public static DefaultGraphType pseudograph()
```
    A pseudograph type. A non-simple undirected graph in which both graph self-loops and multiple edges are permitted.
    
    Returns:
    
    a pseudograph type
  - directedSimple
```
public static DefaultGraphType directedSimple()
```
    A directed simple graph type. An undirected graph for which at most one edge connects any two vertices, and self-loops are not permitted.
    
    Returns:
    
    a directed simple graph type
  - directedMultigraph
```
public static DefaultGraphType directedMultigraph()
```
    A directed multigraph type. A non-simple undirected graph in which no self-loops are permitted, but multiple edges between any two vertices are.
    
    Returns:
    
    a directed multigraph type
  - directedPseudograph
```
public static DefaultGraphType directedPseudograph()
```
    A directed pseudograph type. A non-simple undirected graph in which both graph self-loops and multiple edges are permitted.
    
    Returns:
    
    a directed pseudograph type
  - mixed
```
public static DefaultGraphType mixed()
```
    A mixed graph type. A graph having a set of undirected and a set of directed edges, which may contain self-loops and multiple edges are permitted.
    
    Returns:
    
    a mixed graph type
  - dag
```
public static DefaultGraphType dag()
```
    A directed acyclic graph.
    
    Returns:
    
    a directed acyclic graph type
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class DefaultGraphType

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isDirected

isUndirected

isMixed

isAllowingMultipleEdges

isAllowingSelfLoops

isWeighted

isAllowingCycles

isModifiable

isSimple

isPseudograph

isMultigraph

asDirected

asUndirected

asMixed

asUnweighted

asWeighted

asModifiable

asUnmodifiable

simple

multigraph

pseudograph

directedSimple

directedMultigraph

directedPseudograph

mixed

dag

toString