how to change a string into an int java code example

Example 1: java string to int

int result = Integer.parseInt("500");
System.out.println(result) // prints 500 as int

Example 2: in java how to convert string to integer

class scratch{
    public static void main(String[] args) {
        String str = "54";
        int num = Integer.parseInt("54");
        double doub = Double.parseDouble("54");
    }
}