### /com/in28minutes/java/wrapper/WrapperExamples.java ``` package com.in28minutes.java.wrapper; public class WrapperExamples { public static void main(String[] args) { // Boolean,Byte,Character,Double,Float,Integer,Long,Short // boolean,byte,char ,double,float,int ,long,short // Wrapper classes are final Integer number = new Integer(55);// int Integer number2 = new Integer("55");// String Float number3 = new Float(55.0);// double argument Float number4 = new Float(55.0f);// float argument Float number5 = new Float("55.0f");// String Character c1 = new Character('C');// Only char constructor // Character c2 = new Character(124);//COMPILER ERROR Boolean b = new Boolean(true); // "true" "True" "tRUe" - all String Values give True // Anything else gives false Boolean b1 = new Boolean("true");// value stored - true Boolean b2 = new Boolean("True");// value stored - true Boolean b3 = new Boolean("False");// value stored - false Boolean b4 = new Boolean("SomeString");// value stored - false b = false; // Wrapper Objects are immutable (like String) // valueOfMethods // Provide another way of creating a Wrapper Object Integer seven = Integer.valueOf("111", 2);// binary 111 is converted to // 7 Integer hundred = Integer.valueOf("100", 10);// 100 is stored in // variable // xxxValue methods help in creating primitives Integer integer = Integer.valueOf(57); int primitive = seven.intValue();// 57 float primitiveFloat = seven.floatValue();// 57.0f Float floatWrapper = Float.valueOf(57.0f); int floatToInt = floatWrapper.intValue();// 57 float floatToFloat = floatWrapper.floatValue();// 57.0f // parseXxx methods are similar to valueOf but they // return primitive values int sevenPrimitive = Integer.parseInt("111", 2);// binary 111 is // converted to 7 int hundredPrimitive = Integer.parseInt("100");// 100 is stored in // variable Integer wrapperEight = new Integer(8); // Normal static toString method System.out.println(Integer.toString(wrapperEight));// String Output : 8 // Overloaded static toString method : 2nd parameter : radix System.out.println(Integer.toString(wrapperEight, 2));// String Output : // 1000 // static toXxxString methods. Xxx can be Hex,Binary,Octal System.out.println(Integer.toHexString(wrapperEight));// String Output // :8 System.out.println(Integer.toBinaryString(wrapperEight));// String // Output // :1000 System.out.println(Integer.toOctalString(wrapperEight));// String Output // :10 // Auto Boxing Integer ten = new Integer(10); ten++;// allowed. Java does had work behing the screen for us // Two wrapper objects created using new are not same object Integer nineA = new Integer(9); Integer nineB = new Integer(9); System.out.println(nineA == nineB);// false System.out.println(nineA.equals(nineB));// true // Two wrapper objects created using boxing are same object Integer nineC = 9; Integer nineD = 9; System.out.println(nineC == nineD);// true System.out.println(nineC.equals(nineD));// true } } ```