Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Eclipse Platform Release 3.0
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.eclipse.jface.viewers
Interface IElementComparer

public interface IElementComparer

This interface is used to compare elements in a viewer for equality, and to provide the hash code for an element. This allows the client of the viewer to specify different equality criteria and a different hash code implementation than the `equals` and `hashCode` implementations of the elements themselves.

See Also:
  `StructuredViewer.setComparer(org.eclipse.jface.viewers.IElementComparer)`

Method Summary
`boolean` | `equals(Object a, Object b)` Compares two elements for equality
`int` | `hashCode(Object element)` Returns the hash code for the given element.

Method Detail

### equals

    public boolean equals(Object a,
                          Object b)

  Compares two elements for equality

  Parameters:
    `a` - the first element
    `b` - the second element
  Returns:
    whether a is equal to b

### hashCode

    public int hashCode(Object element)

  Returns the hash code for the given element.

  Returns:
    the hash code for the given element

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Eclipse Platform Release 3.0
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Guidelines for using Eclipse APIs.

Copyright (c) IBM Corp. and others 2000, 2004. All rights reserved.