[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQTn909BGTdhnrQr-0qVAW1zaJPS9BWV1IRjPWHmQHfY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":24,"type":107},[],"2023-12-21 10:24:37",118794809,[],{"courseId":9,"courseImg":10,"courseName":11},"3063799c97f8f3d2ccb8c1ef8389c317","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6d2112725efc21a20518c77d8829931f.png","Java程序设计","以下程序的输出结果为 . class B { int b; B(int x) { b = x; System.out.println("b=" + b); } } class A extends B { int a; A(int x, int y) { super(x); a = y; System.out.println("b=" + b + ",a=" + a); } } public class Test { public static void main(String[] args) { A obj = new A(13, 23); } }",[14,26,35,44,53,62,71,80,89,98],{"answer":15,"createTime":16,"id":17,"options":18,"question":23,"source":24,"type":25},[],"2023-12-21 10:24:36",118794651,[19,20,21,22],"依赖","关联","实现","泛化","学校里每个班级包括若干名学生.按照UML的理论,班级与学生之间是 关系.( )","v1",0,{"answer":27,"createTime":16,"id":28,"options":29,"question":34,"source":24,"type":25},[],118794653,[30,31,32,33],"子类将继承父类所有属性和方法","子类将继承父类所有非私有属性和方法","子类将继承父类public属性和方法","子类只继承父类的方法,而不继承属性","关于继承的说法正确的是",{"answer":36,"createTime":16,"id":37,"options":38,"question":43,"source":24,"type":25},[],118794656,[39,40,41,42],"public void H1{…}","public class Move(){…}","public class void number{}","public class Car{…}","下列哪个类声明是正确的( )",{"answer":45,"createTime":16,"id":46,"options":47,"question":52,"source":24,"type":25},[],118794659,[48,49,50,51],"60","5","0","54","下列语句序列执行后,k 的值是( ). int x=6, y=10, k=5; switch( x%y ) { case 0: k=x*y; case 6: k=x\u002Fy; case 12: k=x-y; default: k=x*y-x; }",{"answer":54,"createTime":16,"id":55,"options":56,"question":61,"source":24,"type":25},[],118794662,[57,58,59,60],"public","class","interface","static","定义一个类,必须使用的关键字是",{"answer":63,"createTime":16,"id":64,"options":65,"question":70,"source":24,"type":25},[],118794664,[66,67,68,69],"try","catch","throw","fmally","java中用来抛出异常的关键字是",{"answer":72,"createTime":16,"id":73,"options":74,"question":79,"source":24,"type":25},[],118794667,[75,76,77,78],"1","2","3","4","给出以下代码,请问该程序的运行结果是什么. class Example{ public static void main(String args[]){ int[] a={1,2,3,4,5}; System.out.println(a[3]);} }",{"answer":81,"createTime":16,"id":82,"options":83,"question":88,"source":24,"type":25},[],118794672,[84,85,86,87],"char a='abc'","byte b=152","float c=2.0","double=2.0","下面那个赋值语句不会产生编译错误?( )",{"answer":90,"createTime":16,"id":91,"options":92,"question":97,"source":24,"type":25},[],118794674,[93,94,95,96],"A.import java.awt.*","B.import java.applet.Applet","C.import java.io.* ; D.import java.awt.Graphics","D.import java.awt.Graphics","在编写Java Applet程序时,需在程序的开头写上 语句.( )",{"answer":99,"createTime":16,"id":100,"options":101,"question":106,"source":24,"type":25},[],118794678,[102,103,104,105],"编译错误:变量array可能没有被初始化","运行时出错:变量array[0]可能没有被初始化","运行时出错:第6行抛出java.lang.NullPointerException","运行时打印"Value is: 0"","以下程序代码能否通过编译,如果通过编译,运行"java Sample"时会出现 .( ) public class Sample{ int array[]; private void test() { System.out.println("Value is: " + array[0]); } public static void main(String[] args) { new Sample().test(); } }",7]