Java.lang.Integer.compareTo() Method


The java.lang.Integer.compareTo() method compares two Integer objects numerically.


Following is the declaration for java.lang.Integer.compareTo() method

public int compareTo(Integer anotherInteger)


anotherInteger − This is the Integer to be compared.

Return Value

This method returns the value 0 if this Integer is equal to the argument Integer, a value less than 0 if this Integer is numerically less than the argument Integer and a value greater than 0 if this Integer is numerically greater than the argument Integer.




The following example shows the usage of java.lang.Integer.compareTo() method.

package com.tutorialspoint;

import java.lang.*;

public class IntegerDemo {

   public static void main(String[] args) {

      // compares two Integer objects numerically
      Integer obj1 = new Integer("25");
      Integer obj2 = new Integer("10");
      int retval =  obj1.compareTo(obj2);
      if(retval > 0) {
         System.out.println("obj1 is greater than obj2");
      } else if(retval < 0) {
         System.out.println("obj1 is less than obj2");
      } else {
         System.out.println("obj1 is equal to obj2");

Let us compile and run the above program, this will produce the following result −

obj1 is greater than obj2