Convert an integer to string in Java

In this post, I am going to explain different ways to convert an Integer object to String in Java.

 

Approach 1: Using toString() method.

String str1 = i1.toString();

 

Approach 2: Using String.valueOf method.

String str2 = String.valueOf(i1);

 

Approach 3: Concatenate int value to an empty string.

String str3 = i1.intValue()+"";

 

Approach 4: Using StringBuilder.

String str4 = new StringBuilder().append(i1).toString();

 

Approach 5: Using StringBuffer.

String str5 = new StringBuffer().append(i1).toString();

 

Find the below working application.

 

IntegerToStringDemo.java

package com.sample.app.strings;

public class IntegerToStringDemo {

    public static void main(String[] args) {
        Integer i1 = 234;

        String str1 = i1.toString();
        String str2 = String.valueOf(i1);
        String str3 = i1.intValue() + "";

        String str4 = new StringBuilder().append(i1).toString();
        String str5 = new StringBuffer().append(i1).toString();

        System.out.println("str1 : " + str1);
        System.out.println("str2 : " + str2);
        System.out.println("str3 : " + str3);
        System.out.println("str4 : " + str4);
        System.out.println("str5 : " + str5);
    }

}

 

Output

str1 : 234
str2 : 234
str3 : 234
str4 : 234
str5 : 234

 

 

Previous                                                 Next                                                 Home