java中静态方法和非静态方法覆盖的区别.docVIP

java中静态方法和非静态方法覆盖的区别 ? ?首先我们提供两个类，基类为Parent，派生类为Child。在Parent中我们提供两个方法，一个是静态方法staticMethod(),一个是非静态方法nonStaticMethod()。在Child类中我们覆盖着两个方法。 class Parent{ ?public void nonStaticMethod()?{ ? ?System.out.println("Parent's Non-Static Method is Called"); ??}?? ? public static void staticMethod()?{? ?System.out.println("parent's static method is called");?? } } class Child extends Parent{ ?public void nonStaticMethod()?{? ?System.out.println("child's non-static method is called");? ?}? ?public static void staticMethod()?{ ?? System.out.println("child's static method is called");? ? }?? } 在Test类中我们分别使用Parent p1 = new Parent(),Parent p2 = new Child(),Child c = new Child()得到三个实例，并分别调用静态方法和非静态方法，我们来看程序的运行结果 在Test类中我们分别使用Parent p1 = new Parent(),Parent p2 = new Child(),Child c = new Child()得到三个实例，并分别调用静态方法和非静态方法，我们来看程序的运行结果 public class Test{ ????????public static void main(String args[])??????????{?? ??????? Parent p1 = new Parent();?? ??????? Parent p2 = new Child();?? ??????? Child c = new Child(); ????????? System.out.print("Parent.static: "); Parent.staticMethod();? ???????? System.out.print("p1.static: "); p1.staticMethod();? ???????? System.out.print("p2.static: "); p2.staticMethod(); ????????? System.out.print("p1.nonStatic: "); p1.nonStaticMethod(); ????????? System.out.print("p2.nonStatic: "); p2.nonStaticMethod(); ????????? System.out.print("Child.static: "); Child.staticMethod(); ????????? System.out.print("c.static: "); c.staticMethod();? ???????? System.out.print("c.nonStatic: "); c.nonStaticMethod();? ????????} } 程序的运行结果为： Parent.static: parent's static method is called p1.static: parent's static method is called p2.static: parent's static method is called p1.nonStatic: Parent's Non-Static Method is Calle p2.nonStatic: child's non-static method is called Child.static: child's static method is called c.static: child's static method is called c.nonStatic: child's non-static method is calle