网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
对下列程序的叙述中,正确的是( )。 1)public class X extends Thread implements Runnable{ 2)public void run{ 3)system.out.println("this is run"); 4)} 5)public static void main(String args[]){ 6)Thread t=new Thread(new X); 7)t.start; 8)} 9)}
A.第l行会产生编译错误
B.第6行会产生编译错误
C.第6行会产生运行错误
D.程序正常运行
参考答案
更多 “ 对下列程序的叙述中,正确的是( )。 1)public class X extends Thread implements Runnable{ 2)public void run{ 3)system.out.println("this is run"); 4)} 5)public static void main(String args[]){ 6)Thread t=new Thread(new X); 7)t.start; 8)} 9)}A.第l行会产生编译错误B.第6行会产生编译错误C.第6行会产生运行错误D.程序正常运行 ” 相关考题
考题
对下列程序的叙述中,正确的是1:public class X extends Thread implements Runnable{2:publ主c void run(){3: System.out.println(“this is run()”);4:}5:public static void main(String args〔〕){6:Threadt二new Thread(new X());7:t.start();8:}9:}A.第1行会产生编译错误B.第6行会产生编译错误C.第6行会产生运行错误D.程序正常运行
考题
( 24 )请阅读下面程序public class ThreadTest {public static void main ( String args[ ]){Thread t1 = new Thread ( new Hello ()):Thread t2 = new Thread ( new Hello ()):t l .start ():t2.start ();}}class Hello implements Runnable {int i ;public void run (){while ( true ) {System.out.println ( "Hello"+i++ ) ;if ( i=5 ) break :}}}该程序创建线程使用的方法是()A )继承 Thread 类B )实现 Runnable 接口C ) t l.start ()D ) t2.start ()
考题
通过实现Rmmable接口创建线程,请在下面横线处填写代码完成此程序。public class ThreadTest{public static void main(String args []){Thread testObj1 = new Thread (new Hello ());Thread testObj2 = new Thread (new Hello ());testObj 2.start ( );}}class Hello implements Runnable{int j;public void run(){System.out.println("Hello" + j ++);}}
考题
请阅读下面程序 public class ThreadTest{ public static void main(String args[]) ( Thread t1=new Thread(new Hello()); Thread t2=new Thread(new Hello()); t1.start(); t2.start(); } } class Hello implements Runnable { int i; public void run() { while(true) { System.out.prinfin("Hello"+i++); if(i=5) break; } } } 该程序创建线程使用的方法是A.继承Thread类B.实现Runnable接口C.t1.start()D.t2.start()
考题
下列哪个方法可用于创建一个可运行的类? ( )A.public class X implements Runable {public void run(){...,.,}}B.public class X implements Thread {public void run(){......}}C.public class X implements Thread {public int run(){……}}D.public class X implements Runable {protected void run(){.....}}
考题
下列类头定义中,错误的是( )。
A.class x { .... }B.public x extends y { .... }C.public class x extends y { .... }D.class x extends y implements y1 { .... }
考题
阅读下面程序 public class Test2______ { public static void main(String[] args){ Thread t=new Test2(); t. start(); } public void run(){ System. out. priatln("How are you. "); } } 在程序下画线处填入的正确的选项是A.implements ThreadB.extends RunnableC.implements RunnableD.extends Thread
考题
阅读下面程序 public class Test implements Runnable{ public static void main(String[]args){ _______________________________________; t. start(); } public void mR(){ System. out. println("Hello!"); }} 在程序下画线处填入正确选项是A.Test t=flew Test()B.Thread t=new Thread();C.Thread t=new Thread(new Test());D.Test t=new Thread();
考题
在下面程序的下画线处应填入的选项是 public class Test______{ public static void main(String args[]) { Test t=new Test(); Thread tt=new Thread(t); tt.start(); } public void run() { for(int i=0;i<5;i++) System.out.println("i="+i); } }A.implements RunnableB.extends ThreadC.implements ThreadD.extends Runnable
考题
下列程序的运行结果是______。 class A implements Runnable { int a; iht i = 2; A(int x) { a = x; } public void run() { while(i > 0) { System.out.println("线程" + a); i--; } } } public class Testl3 { public static void main(String[] args) { Thread a1 = new Thread(new A(1)); Thread a2 = new Thread(new A(2)); a1.start(); a2.start(); } }A.线程1 线程1 线程2 线程2B.线程1 线程2C.线程1 线程2 线程1 线程2D.线程1 线程1 线程1 线程1
考题
在程序的下画线处应填入的选项是( )。 A.implements RunnableB.extends Thread
在程序的下画线处应填入的选项是( )。A.implements RunnableB.extends ThreadC.implements ThreadD.extends Runnable
考题
下列关于Test类的定义中,正确的是( )。A.class Test implements Runnable{ public void run{} Dublic void someMethod[]{} }B.class Test implements Runnable( puIblic void run; }C.class Test implements Runnable( Dublic void someMethod[]; }D.class Test implements Runnable( public void someMethod{} }
考题
对下列程序的叙述中,正确的是( )。 1:public class X extends Thread implements Runnable{ 2:public void run{ 3:system.out.println("this is run"); 4:} 5:oublic static void main(String args[]){ 6:Thread t=new Thread(new X): 7:t.start; 8:} 9:}A.第l行会产生编译错误B.第6行会产生编译错程C.第6行会产生运行错误D.程序正常运行
考题
阅读下面程序 public class Test2 ______ { public static void main(String[] args) { Thread t=new Test2(); t.start(); } public void run() { System.out.println("How are you."); } } 程序中下画线处应填入的正确选项是A.implements ThreadB.extends RunnableC.implements RunnableD.extends Thread
考题
阅读下面程序 public class Test implements Runnable { public static void main(String[] args) { ______ t.start(); } public void run() { System.out.println("Hello!"); } } 程序中下画线处应填入的正确选项是A.Test t=new Test();B.Thread t=new Thread();C.Thread t=new Thread(new Test());D.Test t=new Thread();
考题
下列程序通过实现Runnable接口创建一个线程,选择正确的语句填入程序的横线处。 class MyRun implements Runnable { String str; MyRun(String s) { str = s; } public void run() System.out.println(str); } } public class ex40 { public static void main(String[] args) { String name = "实现阶段Runnable 接口"; MyRun my = new MyRun(name); Thread th = th. start ( ); } }A.new MyRun(my)B.new Thread()C.new Thread(my)D.Thread(my)
考题
请阅读下面程序,说明该程序创建线程使用的方法是( )。 public class ThreadTest { public static void main(String args[]) { Thread tl=new Thread(new HolloWorld); Thread t2=new Thread(new HolloWorld); tl.start; t2.Start; } } class HolloWorld implements Runnable { int i; public void run { while(true) { System.out.println("HolloWorld"+i++); if(i= =5)break; } } }A.继承Thread类B.实现Runnable接口C.tl.startD.t2.start
考题
在程序的下面线处应填人的选项是( )。 A.implements RunnableB.extends Thread
在程序的下面线处应填人的选项是( )。A.implements RunnableB.extends ThreadC.implements ThreadD.extends Runnable
考题
( 30 )在程序的下划线处应填入的选项是public class Test _________{public static void main(String args[]){Test t = new Test();Thread tt = new Thread(t);tt.start();}public void run(){for(int i=0;i5;i++){system.out.println( " i= " +i);}}}A ) implements RunnableB ) extends ThreadC ) implements ThreadD ) extends Runnable
考题
下列类的定义中,错误的是()。A、class x{....}B、public x extends y{....}C、public class x extends y{....}D、class x extends y implements y1{....}
考题
下列代码正确的是哪项?() A、 public class Session implements Runnable, Clonable{ public void run ();public Object clone () ; }B、 public class Session extends Runnable, Cloneable { public void run() {/*dosomething*/} public Object clone() {/*make a copy*/} }C、 public abstract class Session implements Runnable, Clonable { public void run() {/*do something*/} public Object clone() {/*make a copy*/} }D、 public class Session implements Runnable, implements Clonable { public void run() {/*do something*/} public Object clone() {/*make a copy*/} }
考题
现有: interface Data {public void load();} abstract class Info {public abstract void load();} 下列类定义中正确使用Data和Info的是哪项?() A、 public class Employee implements Info extends Data { public void load(){/*dosomething*/} }B、public class Employee extends Inf.implements Data{ public void load() {/*do something*/} }C、public class Empl.yee implements Inf extends Data{ public void Data.1oad(){* do something*/} public void load(){/*do something*/} }D、public class Employee extends Inf implements Data { public void Data.1oad() {/*do something*/) public void info.1oad(){/*do something*/} }
考题
现有: class ThreadBoth extends Threaa implements Runnable { public void run() (System.out.print("hi"); } public static voicl main (String [] args) { Thread tl=new ThreadBoth(): Thread t2 = new Thread (tl): tl.run(): t2.run(): } 结果为:() A、 hi hiB、 hiC、编译失败D、运行时异常被抛出
考题
单选题下列代码正确的是哪项?()A
public class Session implements Runnable, Clonable{ public void run ();public Object clone () ; }B
public class Session extends Runnable, Cloneable { public void run() {/*dosomething*/} public Object clone() {/*make a copy*/} }C
public abstract class Session implements Runnable, Clonable { public void run() {/*do something*/} public Object clone() {/*make a copy*/} }D
public class Session implements Runnable, implements Clonable { public void run() {/*do something*/} public Object clone() {/*make a copy*/} }
考题
单选题现有: interface Data {public void load();} abstract class Info {public abstract void load();} 下列类定义中正确使用Data和Info的是哪项?()A
public class Employee implements Info extends Data { public void load(){/*dosomething*/} }B
public class Employee extends Inf.implements Data{ public void load() {/*do something*/} }C
public class Empl.yee implements Inf extends Data{ public void Data.1oad(){* do something*/} public void load(){/*do something*/} }D
public class Employee extends Inf implements Data { public void Data.1oad() {/*do something*/) public void info.1oad(){/*do something*/} }
考题
单选题class ThreadBoth extends Thread implements Runnable { public void run(){ System.out.print("hi "); } public static void main(String [] args){ Thread t1 = new ThreadBoth(); Thread t2 = new Thread(t1); t1.run(); t2.run(); } } 结果为:()A
hiB
hi hiC
编译失败D
代码运行,但无输出结果
考题
单选题现有: class ThreadBoth extends Threaa implements Runnable { public void run() (System.out.print("hi"); } public static voicl main (String [] args) { Thread tl=new ThreadBoth(): Thread t2 = new Thread (tl): tl.run(): t2.run(): } 结果为:()A
hi hiB
hiC
编译失败D
运行时异常被抛出
热门标签
最新试卷