[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRuo4Jj-HUkFzNJH9iqysLcYxqn0TNPhqT1cQhQBaTG4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-11-09 22:00:12",165223319,[8,9,10,11],"int[ ] arr={11,21,31};for(int x:arr) System.out.println(x)","Object[ ] obj=new String[]{"111","2222","3333"};String [ ] str=(String[])obj","Object[ ] obj={"111","2222","3333"};String [ ] str=(String[])obj","Object[ ] arr=new Float[ ]{11.1F,22.1F,33.3F,44.44F,55.55F};for(Float x:(Float[])arr) System.out.println(x)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},50,"927801b7ed99673834c14ae17c30280d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb838fef161a2bde71ac14f4feee8a987.webp","面相对象程序设计（Java）","work_38732655","Homework8","执行( )程序段之后将出现错误提示",[21,33,42,52,60,69,72,84,95,106],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-11-09 22:00:09",165223304,[26,27,28,29],"abstract修饰符可修饰成员变量、方法和类","抽象方法的方法体部分必须用一对大括号{ }包住","声明抽象方法,大括号可有可无","声明抽象方法不可写出大括号","下列( )叙述是正确的","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],165223308,[37,38,39,40],"类中的实例方法可直接调用超类中的实例方法","类中的实例方法可直接调用超类中的类方法","类中的实例方法可直接调用其他类中的实例方法","类中的实例方法可直接调用本类中的类方法","下列哪种叙述是正确的.( )",{"answer":43,"createTime":44,"id":45,"options":46,"question":51,"source":31,"type":32},[],"2024-11-09 22:00:11",165223312,[47,48,49,50],"30","30.0","30.000","编译失败","以下程序运行结果是( ). class FatherX{ public Integer getX() { return new Integer(10); }}class Son extends FatherX{ public Double getX() { return new Double(20); }}public class Demo12 { public static void main(String[] args) { FatherX f=new FatherX(); Son s=new Son(); System.out.println(f.getX()+s.getX()); }}",{"answer":53,"createTime":5,"id":54,"options":55,"question":59,"source":31,"type":32},[],165223315,[56,57,50,58],"10","10 10","程序可以正常运行,但没有输出内容","以下程序的运行结果是( ). class A{ A( ){ System.out.print(10); }}public class Demo extends A { public static void main(String[] args) { new A( ); new Demo( ); }}",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":31,"type":32},[],165223317,[64,65,66,67],"当前对象的引用","当前对象直接父类对象的引用","当前对象祖先类对象的引用","当前类的子类对象的引用","super关键字表示( )",{"answer":70,"createTime":5,"id":6,"options":71,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":73,"createTime":74,"id":75,"options":76,"question":82,"source":31,"type":83},[],"2024-11-11 16:57:04",165449345,[77,78,79,80,81],"void final methodX() { }","final void methodX() { }","static void methodX() { }","final abstract void methodX() { }","static final void methodX() { }","下面哪些声明能防止方法覆盖?( )",1,{"answer":85,"createTime":86,"id":87,"options":88,"question":94,"source":31,"type":83},[],"2024-11-11 16:57:07",165449347,[89,90,91,92,93],"private","public","protected","static","abstract","在Java语言中,不能用来修饰interface包括( )",{"answer":96,"createTime":97,"id":98,"options":99,"question":105,"source":31,"type":83},[],"2024-11-11 16:57:09",165449349,[100,101,102,103,104],"Y类的构造方法修饰符是public","Y类的构造方法修饰符是 protected","Y类的构造方法没有参数","Y类的构造方法调用了this( )","Y类的构造方法调用了super( )","有如下代码,下面哪些说法是正确的?( ) class X { X( ) { } } class Y extends X { }",{"answer":107,"createTime":108,"id":109,"options":110,"question":115,"source":31,"type":83},[],"2024-11-11 16:57:13",165449352,[111,112,113,114],"public void show( )","public static void print() { }","default void read(double x) { }","public void write(String data) { }","下面( )方法是接口中的合法方法.(JDK 8 及之后)"]