JavaProgramming/HackerRank/FourtyTwo.java at patch-2 · subham500071430/JavaProgramming · GitHub

31 lines (23 loc) · 622 Bytes

// singleton pattern

package HackerRank;

import java.io.*;

import java.util.*;

import java.text.*;

import java.math.*;

import java.util.regex.*;

import java.lang.reflect.*;

public class FourtyTwo {

public String str;

// Step 2: Private static instance of Singleton

private static Singleton instance = null;

// Step 3: Private constructor

private Singleton() {

}

// Step 4: Public static method to get the single instance

public static Singleton getSingleInstance() {

if (instance == null) {

instance = new Singleton();

}

return instance;

}

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