单选题public class Starter extends Thread {  private int x= 2;  public static void main(String[] args) throws Exception {  new Starter().makeItSo();  }  public Starter() {  x=5;  start();  }  public void makeItSo() throws Exception {  join();  x=x- 1;  Syste

题目
单选题
public class Starter extends Thread {  private int x= 2;  public static void main(String[] args) throws Exception {  new Starter().makeItSo();  }  public Starter() {  x=5;  start();  }  public void makeItSo() throws Exception {  join();  x=x- 1;  System.out.println(x);  }  public void run() { x *= 2; }  }  What is the output if the main() method is rum?()
A

 4

B

 5

C

 8

D

 9

E

 Compilation fails.

F

 An exception is thrown at runtime.

G

 It is impossible to determine for certain.


相似考题
参考答案和解析
正确答案: D
解析: 暂无解析
更多“单选题public class Starter extends Thread {  private int x= 2;  public static void main(String[] args) throws Exception {  new Starter().makeItSo();  }  public Starter() {  x=5;  start();  }  public void makeItSo() throws Exception {  join();  x=x- 1;  Syste”相关问题
  • 第1题:

    public class A extends Thread {  A() {  setDaemon(true);  }  public void run() {  (new B()).start();  try {  Thread.sleep(60000);  } catch (InterruptedException x) {}  System.out.println(“A done”);  }  class B extends Thread {  public void run() {  try {  Thread.sleep(60000);  } catch (InterruptedException x) {}  System.out.println(“B done”);  }  }  public static void main(String[] args) {  (new A()).start();  }  }   What is the result?()  

    • A、 A done
    • B、 B done
    • C、 A done B done
    • D、 B done A done
    • E、 There is no exception that the application will print anything.
    • F、 The application outputs “A done” and “B done”, in no guaranteed order.

    正确答案:B

  • 第2题:

    1. public class Exception Test {  2. class TestException extends Exception {}  3. public void runTest() throws TestException {}  4. public void test() /* Point X */ {  5. runTest();  6. }  7. }  At Point X on line 4, which code is necessary to make the code compile?()  

    • A、 No code is necessary.
    • B、 throws Exception
    • C、 catch ( Exception e )
    • D、 throws RuntimeException
    • E、 catch ( TestException e)

    正确答案:B

  • 第3题:

    class ThreadExcept implements Runnable {   public void run() { throw new RuntimeException("exception "); }   public static void main(String [] args) {   new Thread(new ThreadExcept()).start();   try {   int x = Integer.parseInt(args[0]);   Thread.sleep(x);   System.out.print("main ");    } catch (Exception e) { }      }  }   和命令行:  java ThreadExcept 1000    哪一个是结果?()  

    • A、 main
    • B、 编译失败
    • C、 代码运行,但没有输出
    • D、 main java.lang.RuntimeException:exception

    正确答案:D

  • 第4题:

    class Top {  static int x = 1;  public Top(int y) { x *= 3; }  }  class Middle extends Top {  public Middle() { x += 1; }  public static void main(String [] args) {  Middle m = new Middle();  System.out.println(x);  }  }  结果为:() 

    • A、1
    • B、2
    • C、3
    • D、编译失败

    正确答案:D

  • 第5题:

    class Work implements Runnable {  Thread other;   Work(Thread other) { this.other = other; }  public void run() {  try { other.join(); } catch (Exception e) { }  System.out.print("after join ");  } }  class Launch {  public static void main(String [] args) {  new Thread(new Work(Thread.currentThread())).start();  System.out.print("after start ");  } }  结果为:()

    • A、after join
    • B、after start
    • C、after join after start
    • D、after start after join

    正确答案:D

  • 第6题:

    public class TestOne {  public static void main (String[] args) throws Exception {  Thread.sleep(3000);  System.out.println(”sleep”);  }  }  What is the result?() 

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes normally and prints “sleep”.
    • D、 The code executes normally, but nothing is printed.

    正确答案:C

  • 第7题:

    单选题
    public class TestOne {  public static void main (String[] args) throws Exception {  Thread.sleep(3000);  System.out.println(”sleep”);  }  }  What is the result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes normally and prints “sleep”.

    D

     The code executes normally, but nothing is printed.


    正确答案: A
    解析: 暂无解析

  • 第8题:

    单选题
    public class TestOne implements Runnable {  public static void main (String[] args) throws Exception {  Thread t = new Thread(new TestOne());  t.start();  System.out.print(”Started”);  t.join();  System.out.print(”Complete”);  }  public void run() {  for (int i= 0; i< 4; i++) {   System.out.print(i);  }  }  }  What can be a result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes and prints “StartedComplete”.

    D

     The code executes and prints “StartedComplete0123”.

    E

     The code executes and prints “Started0l23Complete”.


    正确答案: E
    解析: 暂无解析

  • 第9题:

    单选题
    class TestA {  public void start() { System.out.println(”TestA”); }  }  public class TestB extends TestA {  public void start() { System.out.println(”TestB”); } public static void main(String[] args) {  ((TestA)new TestB()).start();  }  }  What is the result?()
    A

     TestA

    B

     TestB

    C

     Compilation fails.

    D

     An exception is thrown at runtime.


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    现有:  class Top  {  static int x=l;  public Top (inty)  {  x*=3;  }      }  class Middle extends Top {      public Middle()  {x+=1;  )  public  static void main (String  []  args)  {      Middle m = new Middle();      System. out .println (x);      }     }      结果为:()
    A

    1

    B

    2

    C

    3

    D

    编译失败


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    public class ExceptionTest {  class TestException extends Exception {}  public void runTest () throws TestException {}  public void test () /* Point X*/  {  runTest ();  }  }   At point X on line 4, which code can be added to make the code compile?()
    A

     Throws Exception.

    B

     Catch (Exception e).

    C

     Throws RuntimeException.

    D

     Catch (TestException e).

    E

     No code is necessary.


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    class Top {  static int x = 1;  public Top(int y) { x *= 3; }  }  class Middle extends Top {  public Middle() { x += 1; }  public static void main(String [] args) {  Middle m = new Middle();  System.out.println(x);  }  }  结果为:()
    A

    1

    B

    2

    C

    3

    D

    编译失败


    正确答案: B
    解析: 暂无解析

  • 第13题:

    public class Test {  public static void aMethod() throws Exception {  try {  throw new Exception(); } finally {  System.out.println(“finally”);  }  }  public static void main(String args[]) {  try {  aMethod();  } catch (Exception e) {  System.out.println(“exception”);  }  System.out.println(“finished”);  }  }  What is the result?()  

    • A、 finally
    • B、 exception finished
    • C、 finally exception finished
    • D、 Compilation fails.

    正确答案:C

  • 第14题:

    public class ExceptionTest {   class TestException extends Exception {}   public void runTest () throws TestException {}   public void test () /* Point X*/ {   runTest ();   }   }   At point X on line 4, which code can be added to make the code compile?()  

    • A、 Throws Exception.
    • B、 Catch (Exception e).
    • C、 Throws RuntimeException.
    • D、 Catch (TestException e).
    • E、 No code is necessary.

    正确答案:B

  • 第15题:

    public class TestOne implements Runnable {  public static void main (String[] args) throws Exception {  Thread t = new Thread(new TestOne());  t.start();  System.out.print(”Started”);  t.join();  System.out.print(”Complete”);  }  public void run() {  for (int i= 0; i< 4; i++) {   System.out.print(i);  }  }  }  What can be a result?()

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes and prints “StartedComplete”.
    • D、 The code executes and prints “StartedComplete0123”.
    • E、 The code executes and prints “Started0l23Complete”.

    正确答案:E

  • 第16题:

    现有:  class Top  {  static int x=l;  public Top (inty)  {  x*=3;  }      }  class Middle extends Top {      public Middle()  {x+=1;  )  public  static void main (String  []  args)  {      Middle m = new Middle();      System. out .println (x);      }     }      结果为:()     

    • A、1
    • B、2
    • C、3
    • D、编译失败

    正确答案:D

  • 第17题:

    public class Starter extends Thread {  private int x= 2;  public static void main(String[] args) throws Exception {  new Starter().makeItSo();  }  public Starter() {  x=5;  start();  }  public void makeItSo() throws Exception {  join();  x=x- 1;  System.out.println(x);  }  public void run() { x *= 2; }  }  What is the output if the main() method is rum?() 

    • A、 4
    • B、 5
    • C、 8
    • D、 9
    • E、 Compilation fails.
    • F、 An exception is thrown at runtime.
    • G、 It is impossible to determine for certain.

    正确答案:D

  • 第18题:

    单选题
    class Work implements Runnable {  Thread other;   Work(Thread other) { this.other = other; }  public void run() {  try { other.join(); } catch (Exception e) { }  System.out.print("after join ");  } }  class Launch {  public static void main(String [] args) {  new Thread(new Work(Thread.currentThread())).start();  System.out.print("after start ");  } }  结果为:()
    A

    after join

    B

    after start

    C

    after join after start

    D

    after start after join


    正确答案: C
    解析: 暂无解析

  • 第19题:

    单选题
    1. public class Exception Test {  2. class TestException extends Exception {}  3. public void runTest() throws TestException {}  4. public void test() /* Point X */ {  5. runTest();  6. }  7. }  At Point X on line 4, which code is necessary to make the code compile?()
    A

     No code is necessary.

    B

     throws Exception

    C

     catch ( Exception e )

    D

     throws RuntimeException

    E

     catch ( TestException e)


    正确答案: E
    解析: 暂无解析

  • 第20题:

    单选题
    public class Starter extends Thread {  private int x= 2;  public static void main(String[] args) throws Exception {  new Starter().makeItSo();  }  public Starter() {  x=5;  start();  }  public void makeItSo() throws Exception {  join();  x=x- 1;  System.out.println(x);  }  public void run() { x *= 2; }  }  What is the output if the main() method is rum?()
    A

     4

    B

     5

    C

     8

    D

     9

    E

     Compilation fails.

    F

     An exception is thrown at runtime.

    G

     It is impossible to determine for certain.


    正确答案: D
    解析: 暂无解析

  • 第21题:

    单选题
    public class A extends Thread {  A() {  setDaemon(true);  }  public void run() {  (new B()).start();  try {  Thread.sleep(60000);  } catch (InterruptedException x) {}  System.out.println(“A done”);  }  class B extends Thread {  public void run() {  try {  Thread.sleep(60000);  } catch (InterruptedException x) {}  System.out.println(“B done”);  }  }  public static void main(String[] args) {  (new A()).start();  }  }   What is the result?()
    A

     A done

    B

     B done

    C

     A done B done

    D

     B done A done

    E

     There is no exception that the application will print anything.

    F

     The application outputs “A done” and “B done”, in no guaranteed order.


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    public class Test {  public static void aMethod() throws Exception {  try {  throw new Exception(); } finally {  System.out.println(“finally”);  }  }  public static void main(String args[]) {  try {  aMethod();  } catch (Exception e) {  System.out.println(“exception”);  }  System.out.println(“finished”);  }  }  What is the result?()
    A

     finally

    B

     exception finished

    C

     finally exception finished

    D

     Compilation fails.


    正确答案: C
    解析: 暂无解析

  • 第23题:

    单选题
    现有:   class ThreadExcept implements Runnable {   public void run() { throw new RuntimeException("exception "); }   public static void main(String [] args) {   new Thread(new ThreadExcept()).start();   try {   int x = Integer.parseInt(args[0]);   Thread.sleep(x);   System.out.print("main ");  } catch (Exception e) { }  }   }   和命令行:  java ThreadExcept 1000   哪一个是结果?()
    A

     main

    B

     编译失败

    C

     代码运行,但没有输出

    D

     main java.lang.RuntimeException: exception


    正确答案: B
    解析: 暂无解析

  • 第24题:

    单选题
    public class Test {  public static void replaceJ(string text)  {  text.replace (‘j’, ‘l’);  }  public static void main(String args[])  {  string text = new String (“java”)  replaceJ(text);  system.out.printIn(text);  }  }      What is the result?()
    A

     The program prints “lava”

    B

     The program prints “java”

    C

     An error at line 7 causes compilation to fail.

    D

     Compilation succeeds but the program throws an exception.


    正确答案: A
    解析: 暂无解析