题目内容
Tomearned$120ininterestonhissavingsaccountlastyear.Tomhasdecidedtoleavethe$120inhisaccountsothathecanearninterestonthe$120thisyear.Thisprocessofearninginterestonpriorinterestearningsiscalled:
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此题存在语法错误。如果需要保持Test类代码不变，修改程序，使得程序输出为：callmecallyou应如何修改，请将修改后的代码写在答案框中。源代码如下：abstract class A {abstract void callme();void metoo() {System.out.println("metoo");}}class B extends A {void callme() {System.out.println("callme");}void callyou(){System.out.println("callyou");}}public class Test {public static void main(String[] args) {A a = new B();a.callme();a.callyou();}}
只能修改son类代码，其他代码保持不变，要求程序输出：202.110.33.0源代码为：public class Test {public static void main(String[] args) {DerivedClass d= new son();System.out.println(d.getIp());}}abstract class BaseClass{String hostName="WUIT";abstract String getName();abstract String getIp();//设计者认为应该存在该方法}abstract class DerivedClass extends BaseClass{String ip = "202.110.33.0";String getName() {return hostName;}}class son extends DerivedClass{}
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