public class strvalueOf{ public static void main(String args[]) { Integer i = Integer.valueOf("862"); Long l = Long.valueOf("228693"); Byte b = Byte.valueOf("55"); Short s = Short.valueOf("9"); Float f = Float.valueOf("852.256"); Double d = Double.valueOf("259873.147369222"); System.out.println(i); System.out.println(l); System.out.println(b); System.out.println(s); System.out.println(f); System.out.println(d); } }