How do you make a class as singleton. Explain with a example?

Answer 1

/**

* @author lalatendu puhan

*

*/

class TestSingleton {

// Singleton implementation

private static TestSingleton testSingleton = null;

/**

* Default contructor, with singleton implementation

*/

private TestSingleton() {

}

/**

* I return the singleton instance .

* @return

*/

public static TestSingleton getSingleton()

{

if(null == testSingleton)

testSingleton = new TestSingleton();

return testSingleton;

}

}

to access this

/**

* @author Lalatendu puhan

*

*/

public class AccessSingleton {

TestSingleton mSingleton;

public void getSingletonObj()

{

mSingleton = TestSingleton.getSingleton();

}

public static void main(String[] args) {

AccessSingleton obj1 = new AccessSingleton();

obj1.getSingletonObj();

}

}