how to initialize a variable in java

/**
 * @author lautturi.com
 * Java example: declare and initialize variable in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		int var1 = 1; // declare and initialize a variable in java
		
		double var2; // declare a variable in java
		var2 = 3.1415; // initialize a variable in java
		
		System.out.println(var1);
		System.out.println(var2);
	}
}