Convert String to int in Java

by guru · Published July 8, 2021 · Updated July 9, 2021

Some times we need to convert String to int in Java for android purposes. This is fairly easy using Integer class.

This can be achieved by two methods:

Using parseInt() method of Integer class we can convert String to int

String number = "10";
int result = Integer.parseInt(number);
System.out.println(result);

String number = "10";

int result = Integer.parseInt(number);

System.out.println(result);

Note : In this case the number returned by the method is primitive int.

Using valueOf() method we can convert String to Integer object.

String number = "10";
Integer result = Integer.valueOf(number);
System.out.println(result);

String number = "10";

Integer result = Integer.valueOf(number);

System.out.println(result);

Note : In this case we will instance of Integer class.