Java - Integer toString() method

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Description

The Java Integer toString() method returns a String object representing this Integer's value.

Declaration

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

public String toString()

Parameters

NA

Return Value

This method returns a string representation of the value of this object in base 10.

Exception

NA

Getting String Representation of an Integer with Positive int Value Example

The following example shows the usage of Integer toString() method to get the string representation of the specified int value. We've created an Integer object using a positive int value. Then using toString() method, we're getting the string representation in a variable and printing it.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer i = new Integer(20);
   
      // returns a string representation of the integer value in base 10
      String retval = i.toString();
      System.out.println("Value = " + retval);
   }
}

Output

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

Value = 20

Getting String Representation of an Integer with Negative int Value Example

The following example shows the usage of Integer toString() method to get the string representation of the specified int value. We've created an Integer object using a negative int value. Then using toString() method, we're getting the string representation in a variable and printing it.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {

      Integer i = new Integer(-20);
   
      // returns a string representation of the integer value in base 10
      String retval = i.toString();
      System.out.println("Value = " + retval);
   }
}

Output

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

Value = -20

Getting String Representation of an Integer with Positive Zero int Value Example

The following example shows the usage of Integer toString() method to get the string representation of the specified int value. We've created an Integer object using a zero value. Then using toString() method, we're getting the string representation in a variable and printing it.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer i = new Integer(0);
   
      // returns a string representation of the integer value in base 10
      String retval = i.toString();
      System.out.println("Value = " + retval);
   }
}

Output

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

Value = 0