java中@Override的作用_JAVA_编程开发_程序员俱乐部

               java中@Override的作用引用

@Override是java的编译时批注(annotation)语法,

作用是标记哪些是重载父类的方法，哪些是自己新增的方法

并且java编译器在发现有此批注的方法并不是父类的方法时会抛出一个error

并不影响运行时，而且大小写敏感，所以不能写成@override等诸如此类

@Override — the @Override annotation informs the compiler that the element is meant to override an element declared in a superclass (overriding methods will be discussed in the the lesson titled "Interfaces and Inheritance").
While it's not required to use this annotation when overriding a method, it helps to prevent errors. If a method marked with @Override fails to correctly override a method in one of its superclasses, the compiler generates an error.

@Override
	public String toString(){
		return "user"+age;
	}