Java Program to Convert String to Int

In java, we can convert string to integer using static methods like parseInt() and valueOf(). 

Java String to Int Using Integer.parseInt()

parseInt() is a static method of Integer class, this method returns a primitive int.

class StringToInt{
 public static void main(String[] args){
  String str="100";
  
  //String to Int using parseInt method
  int a = Integer.parseInt(str);
  System.out.println("Sum is "+(a+10));
 }
}

Output:

Sum is 110

Java String to Int Using Integer.valueOf()

valueOf() method returns a Integer object.

class StringToInt{
 public static void main(String[] args){
  String str="100";
  
  //String to Int using parseInt method
  Integer a = Integer.valueOf(str);
  System.out.println("Sum is "+(a+10));
 }
}

Output:

Sum is 110