JAVA EE: Java Tutorial : Java String(Strings to primitive Numbers)

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ParseXXXDemo.java

/*
 * Converting Strings to primitive Numbers.
 */
public class ParseXXXDemo
{

    public static void main(String[] args)
    {
        /*
         * Each of the Number subclasses that wrap primitive
         * numeric types also provides a parseXXXX() method
         * (for example, parseFloat()) that can be used to
         * convert strings to primitive numbers. Since a
         * primitive type is returned instead of an object,
         * the parseFloat() method is more direct than the
         * valueOf() method.
         */
        int intVar = Integer.parseInt("100");
        System.out.println("intVar    = " + intVar);

        double doubleVar = Double.parseDouble("20.289");
        System.out.println("doubleVar = " + doubleVar);
    }
}