Can the integer once converted to String using toString() method be reconverted back to Integer?

Question

public class ArrayManipulations {

    public static void main(String[] args) {

        String name = num.toString();
        System.out.println(name); // want to convert this back to int 
        System.out.println(num.getClass().getName() + '@' + Integer.toHexString(num.hashCode()));
}

}

Now i want to convert the name back to integer. is it possible???

Answer 1

Yes.

int i = Integer.parseInt(name);

Answer 2

Yes you can

Return an Object Integer :

Integer var = Integer.valueOf("0");

This method returns the relevant Number Object holding the value of the argument passed. The argument can be a primitive data type, String, etc.

Return a primitive int :

int var = Integer.parseInt("0");

This method is used to get the primitive data type of a certain String. parseXxx() is a static method and can have one argument or two.

Answer 3

If you want to convert String to int, you use:

int intNum = Integer.parseInt(name); //name is variable that you want to change back to int

Answer 4

The Integer class provides the following method for this task:

Integer.parseInt(String s);

Answer 5

Yes.

Integer.parseInt(Integer.toString(3));

should do the trick. More in the Java Documentation.