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Singleton.java
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package org.json.junit.data;
/**
* Sample singleton for use with bean testing.
*
* @author John Aylward
*
*/
public final class Singleton {
/** */
private int someInt;
/** */
private String someString;
/** single instance. */
private static final Singleton INSTANCE = new Singleton();
/** @return the singleton instance. */
public static final Singleton getInstance() {
return INSTANCE;
}
/** */
private Singleton() {
if (INSTANCE != null) {
throw new IllegalStateException("Already instantiated");
}
}
@Override
protected Object clone() throws CloneNotSupportedException {
return INSTANCE;
}
/** @return someInt */
public int getSomeInt() {
return this.someInt;
}
/**
* sets someInt.
*
* @param someInt
* the someInt to set
*/
public void setSomeInt(int someInt) {
this.someInt = someInt;
}
/** @return someString */
public String getSomeString() {
return this.someString;
}
/**
* sets someString.
*
* @param someString
* the someString to set
*/
public void setSomeString(String someString) {
this.someString = someString;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + this.someInt;
result = prime * result + ((this.someString == null) ? 0 : this.someString.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Singleton other = (Singleton) obj;
if (this.someInt != other.someInt)
return false;
if (this.someString == null) {
if (other.someString != null)
return false;
} else if (!this.someString.equals(other.someString))
return false;
return true;
}
}