String to int in Java

// Java Program to demonstrate 
// String to int conversion using parseInt()
public class StringToInt {
    public static void main(String[] args) {
      
        String s = "12345"; 

        // Convert the string to an integer 
        // using Integer.parseInt()
        int n = Integer.parseInt(s);

        System.out.println("" + n);
    }
}

// Java ProgramConvert String to int 
// using Integer.valueOf() Method
public class StringToInt { 
  
    public static void main(String[] args) {
      
        // Convert String to Integer using valueOf()
        String s = "217";
      
        // Convert the string to an Integer object 
        // using Integer.valueOf()
        int n = Integer.valueOf(s);
        
        System.out.println("" + n);
    }
}

// Java Program to Demonstrate Working of parseInt() Method
// where NumberFormatException is Thrown
public class StringToIntExample {

    public static void main(String[] args) {
        
        // NumberFormatException due to empty string
        String s1 = "";
        int n1 = Integer.parseInt(s1); 
        
        // NumberFormatException due to non-numeric string
        String s2 = "geeksforgeeks";
        int n2 = Integer.parseInt(s2); 

        System.out.println(n1);
        System.out.println(n2);
    }
}