java integer from strin gnull code example

Example 1: 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");
    }
}

Example 2: formatting an integer in java

Specifying a width:

String.format("|%20d|", 93); // prints: |                  93|


Left-justifying within the specified width:

String.format("|%-20d|", 93); // prints: |93                  |


Pad with zeros:

String.format("|%020d|", 93); // prints: |00000000000000000093|