JavaSE8 base subclasses must override all abstract methods in the inherited abstract class

Os:windows7 x64
Jdk:jdk-8u131-windows-x64
Ide:eclipse Oxygen Release (4.7.0)


Code:

Abstract class can have ordinary member method abstract class Person {//non abstract method public void SayHello () {}//abstract method public abstract void study ();p ublic abstract void play (); Class Javaer extends person{//subclasses must override all abstract methods in the abstract class public void study () {SYSTEM.OUT.PRINTLN ("learning Java");} public void Play () {System.out.println ("Play");}} Class Demo {public static void main (string[] agrs) {Javaer j = new Javaer (); J.study (); J.play ();}}

Results:

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JavaSE8 base subclasses must override all abstract methods in the inherited abstract class