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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*/}       }


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更多 “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*/}       }” 相关考题
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考题 多选题Which two code fragments will execute the method doStuff() in a separate thread?()Anew Thread() {public void run() { doStuff(); }};Bnew Thread() {public void start() { doStuff(); }};Cnew Thread() {public void start() { doStuff(); }}.run();Dnew Thread() {public void run() { doStuff(); }}.start();Enew Thread(new Runnable() {public void run() { doStuff(); }}).start();

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考题 单选题public class SomeException {  } Class a:  public class a {  public void doSomething() { }  } Class b:  public class b extends a {  public void doSomething() throws SomeException { }  }  Which is true about the two classes?()A  Compilation of both classes will fail.B  Compilation of both classes will succeed.C  Compilation of class a will fail. Compilation of class b will succeed.D  Compilation of class a will fail. Compilation of class a will succeed.

考题 单选题interface Data { public void load(); }  abstract class Info { public abstract void load(); }  Which class correctly uses the Data interface and Info class?()A  public class Employee extends Info implements Data { public void load() { /*do something*/ } }B  public class Employee implements Info extends Data { public void load() { /*do something*/ } }C  public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }D  public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }E  public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }F  public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }

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 单选题现有:  interface Animal {       void eat () ;       }       //insert code here       public class HouseCat extends Feline {       public void eat() { }       }  和五个申明  abstract class Feline implements Animal { }  abstract  class  Feline  implements  Animal  {  void eat () ;  }  abstract class Feline implements Animal { public void eat();}  abstract class Feline implements Animal { public void eat() {}  }  abstract class Feline implements Animal { abstract public void eat();} 结果为:()A 1B 2C 3D 4