package com.tj;

 public class MyClass2 {

     public static void main(String[] args) {

         // 为每一个原始类型创建包装对象

         Boolean refBoolean = new Boolean(true);

         Byte refByte = new Byte((byte) 123);

         Character refChar = new Character('x');

         Short refShort = new Short((short) 123);

         Integer refInt = new Integer(123);

         Long refLong = new Long(123L);

         Float refFloat = new Float(12.3F);

         Double refDouble = new Double(12.3D);

         // 取回值得包装对象

         boolean bool = refBoolean.booleanValue();

         byte b = refByte.byteValue();

         char c = refChar.charValue();

         short s = refShort.shortValue();

         int i = refInt.intValue();

         long l = refLong.longValue();

         float f = refFloat.floatValue();

         double d = refDouble.doubleValue();

     }

 }