我看到的例子中给出的代码:
public class A{
private static A a = new A();
public static A getA(){
return a;
}
private A(){}
}
如果代码变成
public class A{
public static final A a = new A();
private A(){}
}
看起来效果是一样的,那么修改后的代码可以么?有什么差别么?
关于单子模式[求助]
我看到的例子中给出的代码:
public class A{
private static A a = new A();
public static A getA(){
return a;
}
private A(){}
}
如果代码变成
public class A{
public static final A a = new A();
private A(){}
}