父類：

public class Father {

public void function1(){
?? System.out.println("this is father's function 1");
}

public void function2(){
?? System.out.println("this is father's function 2");
}

public void function3(){
?? System.out.println("this is father's function 3");
}

public void function(){
?? function1();
?? function2();
?? function3();
}
}

子類：

public class Son extends Father {

public void function3(){
?? System.out.println("this is son's function 3");
}

}

測試父類：

public class TestFather extends TestCase {
Father f;
@Before
protected void setUp() throws Exception {
?? f=new Father();
}

@Test
public void testFunction() {
?? f.function();
}
}

輸出：

this is father's function 1
this is father's function 2
this is father's function 3

測試子類：

public class TestSon {
Son s;
@Before
public void setUp() throws Exception {
?? s=new Son();
}

@Test
public void testFunction() {
?? s.function();
}

}

輸出：

this is father's function 1
this is father's function 2
this is son's function 3

?

這樣的一個結果，對我是有用的~~~

轉載于:https://blog.51cto.com/winters1224/799086

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