public class StringToObject { public static void main(String[] args) { //In Java We can Store numbers as String format i.e.,enclosed with "" String no = "145"; String floatNo = "123.456f"; String doubleNo = "123.34556d"; //1.Passing numbers as string to Wrapper Class Constructor Integer i1 = new Integer(no); Float f1 = new Float(floatNo); Double d1 = new Double(doubleNo); System.out.println("Object i1 :::::" + i1); System.out.println("Object f1 :::::" + f1); System.out.println("Object d1 :::::" + d1); //2.Converting the numbers as String using static method of Wrapper class Integer intValue = Integer.valueOf(no); Float floatValue = Float.valueOf(floatNo); Double doubleValue = Double.valueOf(doubleNo); System.out.println("Object intValue :::::" + intValue); System.out.println("Object floatValue :::::" + floatValue); System.out.println("Object doubleValue :::::" + doubleValue); } }