Pre and post increment operators.

CODE :

package com.ack.learning;

public class PreAndPostIncrementOperators {
public static void main( String[] args ) {
int index = 0;

// all these statements add one to index
index = index + 1;
index += 1;
index++;
++index;

// prints index value -> 4
System.out.println( index );

// prints index current value of 4, and then increments
System.out.println( index++ );

// prints index value which is 5
System.out.println( index );

// increments index, and then prints its value of 6
System.out.println( ++index );

// prints out current value of index which is 6
System.out.println( index );

// same logic holds for -- operator
}
}