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org.apache.commons.lang.builder
Class EqualsBuilderTest.TestObject  

java.lang.Object
  org.apache.commons.lang.builder.EqualsBuilderTest.TestObject

Direct Known Subclasses:

EqualsBuilderTest.TestEmptySubObject, EqualsBuilderTest.TestSubObject, EqualsBuilderTest.TestTSubObject, EqualsBuilderTest.TestTSubObject2

Enclosing class:

EqualsBuilderTest

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static class EqualsBuilderTest.TestObject

extends java.lang.Object

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Field Summary
private  int	a

 

Constructor Summary

EqualsBuilderTest.TestObject()

EqualsBuilderTest.TestObject(int a)

 

Method Summary
boolean	equals(java.lang.Object o)           Determine whether this Object is semantically equal to another Object.
int	getA()
void	setA(int a)

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

a

private int a

Constructor Detail

EqualsBuilderTest.TestObject

public EqualsBuilderTest.TestObject()

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EqualsBuilderTest.TestObject

public EqualsBuilderTest.TestObject(int a)

Method Detail

equals

public boolean equals(java.lang.Object o)

Description copied from class: java.lang.Object

Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

• It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
• It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
• It must be reflexive. a.equals(a) must always be true.
• It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
• a.equals(null) must be false.
• It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a java.lang.ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a java.lang.NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, java.util.IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.

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setA

public void setA(int a)

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getA

public int getA()

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> commons >> lang >> [ builder overview ]	PREV CLASS  NEXT CLASS
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