Java Integer toString() Method

The toString() method of Java Integer class is used to get a String object representing the value of the Number Object. There are three different types of Java toString() method which can be differentiated depending on its parameter.

These are:

1. Java Integer toString() Method
2. Java Integer toString(int i) Method
3. Java Integer toString(int i, int radix) Method

1. Java Integer toString() Method

The toString() method of Java Integer class returns a string equivalent of this Integer's value. This method gives the same result as Integer.toString(int i). It overrides the toString() method of class Object.

2. Java Integer toString(int i) Method

The toString(int i) is an inbuilt method of Java which is used to return a String object representing the specified integer in the method argument.

3. Java Integer toString(int i, int radix) Method

This method returns a string representation of the first int type argument in the radix specified by the second argument. If the radix is smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX then the base 10 is used. In this method, the following ASCII characters are used as digits: 0 to 9 and a to z.

Note: If the first argument is negative, the result of the first element is the ASCII minus character '-'.

Syntax:

Following is the declarations of toString() method:

Parameter:

Returns:

Exceptions:

NA

Compatibility Version:

Java 1.0 and above

Example 1

Output:

String Representation = 25
String Representation = -18

Example 2

Output:

Output: -12
Output: 12

Example 3

Output:

Enter Number to be string representation : -3465.876
Exception in thread "main" java.util.InputMismatchException
	at java.base/java.util.Scanner.throwFor(Scanner.java:939)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
	at myPackage.IntegerToStringExample3.main(IntegerToStringExample3.java:10)

Example 4

Output:

String Value = 65
String Value = 41
String Value = 101
String Value = 1000001

Example 5

Output:

Enter Inputs to be string representation: 
Enter Number: -45648
Enter Radix/Base: 16
Output: -b250