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org.apache.commons.lang.builder
Class EqualsBuilderTest.TestTSubObject2  view EqualsBuilderTest.TestTSubObject2 download EqualsBuilderTest.TestTSubObject2.java

java.lang.Object
  extended byorg.apache.commons.lang.builder.EqualsBuilderTest.TestObject
      extended byorg.apache.commons.lang.builder.EqualsBuilderTest.TestTSubObject2
Enclosing class:
EqualsBuilderTest

static class EqualsBuilderTest.TestTSubObject2
extends EqualsBuilderTest.TestObject


Field Summary
private  int t
           
 
Constructor Summary
EqualsBuilderTest.TestTSubObject2(int a, int t)
           
 
Method Summary
 boolean equals(java.lang.Object o)
          Determine whether this Object is semantically equal to another Object.
 int getA()
           
 int getT()
           
 void setA(int a)
           
 void setT(int t)
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

t

private transient int t
Constructor Detail

EqualsBuilderTest.TestTSubObject2

public EqualsBuilderTest.TestTSubObject2(int a,
                                         int t)
Method Detail

getT

public int getT()

setT

public void setT(int t)

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.


setA

public void setA(int a)

getA

public int getA()