// final
// 演示final关键字的使用，并将结果打印到控制台。
package ch04;
public class TestClass {
private int num;
public void setNum(int num){
this.num=num;
}
public int getNum(){
return this.num;
}
public static void main(String[] args){
TestClass obj = new TestClass();
System.out.println("obj.num:"+obj.getNum());
obj.setNum(10);
System.out.println("obj.num:"+obj.getNum());
obj = new TestClass();//错误！final变量obj不能指向新的对象
}
}
