public class Test{ public static void main(String[]args){ intx=5; boolean b1=true; boolean b2=false; if((x==4)&&!b2) System.out.print("l"); System.out.print("2"); if((b2=true)&&b1) System.out.print("3"); } } What is the result?()A、2B、3C、12D、23E、123F、Comp

题目

public class Test{ public static void main(String[]args){ intx=5; boolean b1=true; boolean b2=false; if((x==4)&&!b2) System.out.print("l"); System.out.print("2"); if((b2=true)&&b1) System.out.print("3"); } } What is the result?()

  • A、2
  • B、3
  • C、12
  • D、23
  • E、123
  • F、Compilation fails.
  • G、An exceptional ist hrown at runtime.

相似考题
参考答案和解析
正确答案:D
更多“public class Test{ public static void main(String[]args){ intx=5; boolean b1=true; boolean b2=false; if((x==4)!b2) System.out.print("l"); System.out.print("2"); if((b2=true)b1) System.out.print("3"); } } What is the result?()A、2B、3C、12D、23E、123F、Compilati”相关问题
  • 第1题:

    下列代码的执行结果是______。 public class ex55 { public static void main(String args[] ) { String s1=new String("hello"); String s2=new String("hello"); System.out.print (s1==s2); System.out.print (","); System.out.println (s1.equals (s2)); } }

    A.true, false

    B.true, true

    C.false, true

    D.false, false


    正确答案:C

  • 第2题:

    class One {  public One() { System.out.print(1); }  }  class Two extends One {  public Two() { System.out.print(2); }  }  class Three extends Two {  public Three() { System.out.print(3); }  }  public class Numbers{  public static void main( String[] argv) { new Three(); }  }  What is the result when this code is executed?() 

    • A、 1
    • B、 3
    • C、 123
    • D、 321
    • E、 The code rims with no output.

    正确答案:C

  • 第3题:

    public class Test {  public static void main(String [] args) {  int x =5;  boolean b1 = true;  boolean b2 = false;  if((x==4) && !b2)  System.out.print(”l “);  System.out.print(”2 “);  if ((b2 = true) && b1)  System.out.print(”3 “);  } }  What is the result?() 

    • A、 2
    • B、 3
    • C、 1 2
    • D、 2 3
    • E、 1 2 3
    • F、 Compilation fails.
    • G、 Au exceptional is thrown at runtime.

    正确答案:D

  • 第4题:

    static void test() {  try {  String x=null;  System.out.print(x.toString() +“ “);  }  finally { System.out.print(“finally “); }  }  public static void main(String[] args) {  try { test(); }  catch (Exception ex) { System.out.print(”exception “); }  }  What is the result?() 

    • A、 null
    • B、 finally
    • C、 null finally
    • D、 Compilation fails.
    • E、 finally exception

    正确答案:E

  • 第5题:

    public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)&&(i<2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()  

    • A、 ABDCBDCB
    • B、 ABCDABCD
    • C、 Compilation fails.
    • D、 An exception is thrown at runtime.

    正确答案:A

  • 第6题:

    public class X {  public static void main (String[]args)  {  String s1 = new String (“true”);  Boolean b1 = new Boolean (true);  if (s2.equals(b1))   {  System.out.printIn(“Equal”);  }  }  }      What is the result?()  

    • A、 The program runs and prints nothing.
    • B、 The program runs and prints “Equal”
    • C、 An error at line 5 causes compilation to fail.
    • D、 The program runs but aborts with an exception.

    正确答案:A

  • 第7题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (RuntimeException ex) {  System.out.print(“B”);  }  catch (Exception ex1) {  System.out.print(“C”);  }   finally {  System.out.print(“D”);  }  System.out.print(“E”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result?()  

    • A、 BD
    • B、 BCD
    • C、 BDE
    • D、 BCDE
    • E、 ABCDE
    • F、 Compilation fails.

    正确答案:C

  • 第8题:

    static void test() throws Error {  if (true) throw new AssertionError();  System.out.print(”test “);  }  public static void main(String[] args) {  try { test(); }  catch (Exception ex) { System.out.print(”exception “); }  System.out.print(”elld “);  }  What is the result?() 

    • A、 end
    • B、 Compilation fails.
    • C、 exception end
    • D、 exception test end
    • E、 A Throwable is thrown by main.
    • F、 An Exception is thrown by main.

    正确答案:E

  • 第9题:

    单选题
    static void test() {  try {  String x=null;  System.out.print(x.toString() +“ “);  }  finally { System.out.print(“finally “); }  }  public static void main(String[] args) {  try { test(); }  catch (Exception ex) { System.out.print(”exception “); }  }  What is the result?()
    A

     null

    B

     finally

    C

     null finally

    D

     Compilation fails.

    E

     finally exception


    正确答案: B
    解析: 暂无解析

  • 第10题:

    单选题
    public class X {  public static void main (String[]args)  {  String s1 = new String (“true”);  Boolean b1 = new Boolean (true);  if (s2.equals(b1))   {  System.out.printIn(“Equal”);  }  }  }      What is the result?()
    A

     The program runs and prints nothing.

    B

     The program runs and prints “Equal”

    C

     An error at line 5 causes compilation to fail.

    D

     The program runs but aborts with an exception.


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result? ()
    A

     AB

    B

     BC

    C

     ABC

    D

     BCD

    E

     Compilation fails.


    正确答案: D
    解析: 暂无解析

  • 第12题:

    单选题
    public class Test {  public static void main(String [] args) {  int x =5;  boolean b1 = true;  boolean b2 = false;  if((x==4) && !b2)  System.out.print(”l “);  System.out.print(”2 “);  if ((b2 = true) && b1)  System.out.print(”3 “);  } }  What is the result?()
    A

     2

    B

     3

    C

     1 2

    D

     2 3

    E

     1 2 3

    F

     Compilation fails.

    G

     Au exceptional is thrown at runtime.


    正确答案: B
    解析: 暂无解析

  • 第13题:

    下列选项中,哪个是程序的运行结果class Test{public static void main(String[] args) {int a = 3;int b = 6;System.out.print(a==b);System.out.print(aSystem.out.print(a!=b);System.out.print(a>=b);}}

    A.false false true false

    B.false false true true

    C.false true true false

    D.true false false true


    答案:C
    解析:3==6(错),3<6(对),3!=6(对),3>=6(错)

  • 第14题:

    现有:  class Waiting implements Runnable  {       boolean flag=false;  public  synchronized void run()  {       if  (flag)  {       flag=false;  System.out.print ("1");  try  {  this.wait();  )  catch  (Exception e)  {  }       System.out.print ("2");       }  else  {       flag=true;  System.out.print ("3");  try{Thread.sleep (2000); } catch(Exception e)  {}      System.out.print ("4");       notify();       }       }  public static void main (String  []  args)  {       Waiting w=new Waiting();       new Thread (w) .start();       new Thread (w) .start();       }       }  以下哪两项是正确的?()    

    • A、代码输出l 3 4
    • B、代码输出3 4 1
    • C、代码输出l 2 3 4
    • D、代码输出1 3 4 2
    • E、代码运行完毕
    • F、代码不会完成

    正确答案:B,F

  • 第15题:

    public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?() 

    • A、 foofoofoofoofoo
    • B、 foobarfoobarbar
    • C、 foobarfoofoofoo
    • D、 foobarfoobarfoo
    • E、 barbarbarbarbar
    • F、 foofoofoobarbar
    • G、 foofoofoobarfoo

    正确答案:D

  • 第16题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”); }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }   public static void badMethod() {} }  What is the result?()  

    • A、 AC
    • B、 BD
    • C、 ACD
    • D、 ABCD
    • E、 Compilation fails.

    正确答案:C

  • 第17题:

    public class X {   public static void main (Stringargs) {   String s1 = new String (“true”);   Boolean b1 = new Boolean (true);   if (s2.equals(b1)) {   System.out.printIn(“Equal”);   }   }   }   What is the result? () 

    • A、 The program runs and prints nothing.
    • B、 The program runs and prints “Equal”
    • C、 An error at line 5 causes compilation to fail.
    • D、 The program runs but aborts with an exception.

    正确答案:A

  • 第18题:

    class Waiting implements Runnable {  boolean flag = false;  public synchronized void run() {  if (flag) {  flag = false;  System.out.print("1 ");  try { this.wait(); } catch (Exception e) { }  System.out.print("2 ");  }  else {  flag = true;  System.out.print("3 ");  try { Thread.sleep(2000); } catch (Exception e) { }  System.out.print("4 ");  notify();  }  }  public static void main(String [] args) {  Waiting w = new Waiting();  new Thread(w).start();  new Thread(w).start ();  }  }  以下哪两项是正确的?() 

    • A、代码输出 1 3 4
    • B、代码输出 3 4 1
    • C、代码输出 1 2 3 4
    • D、代码不会完成

    正确答案:A,B

  • 第19题:

    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (Exception ex) {  System.out.print(“B”);  }  finally {  System.out.print(“C”);  }  System.out.print(“D”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result? () 

    • A、 AB
    • B、 BC
    • C、 ABC
    • D、 BCD
    • E、 Compilation fails.

    正确答案:D

  • 第20题:

    单选题
    public class X {  public static void main(String [] args) {  try {  badMethod();  System.out.print(“A”);  }  catch (RuntimeException ex) {  System.out.print(“B”);  }  catch (Exception ex1) {  System.out.print(“C”);  }   finally {  System.out.print(“D”);  }  System.out.print(“E”);  }  public static void badMethod() {  throw new RuntimeException();  }  }  What is the result?()
    A

     BD

    B

     BCD

    C

     BDE

    D

     BCDE

    E

     ABCDE

    F

     Compilation fails.


    正确答案: D
    解析: 暂无解析

  • 第21题:

    多选题
    class Waiting implements Runnable {  boolean flag = false;  public synchronized void run() {  if (flag) {  flag = false;  System.out.print("1 ");  try { this.wait(); } catch (Exception e) { }  System.out.print("2 ");  }  else {  flag = true;  System.out.print("3 ");  try { Thread.sleep(2000); } catch (Exception e) { }  System.out.print("4 ");  notify();  }  }  public static void main(String [] args) {  Waiting w = new Waiting();  new Thread(w).start();  new Thread(w).start ();  }  }  以下哪两项是正确的?()
    A

    代码输出 1 3 4

    B

    代码输出 3 4 1

    C

    代码输出 1 2 3 4

    D

    代码不会完成


    正确答案: A,C
    解析: 暂无解析

  • 第22题:

    单选题
    public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)&&(i<2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()
    A

     ABDCBDCB

    B

     ABCDABCD

    C

     Compilation fails.

    D

     An exception is thrown at runtime.


    正确答案: D
    解析: 暂无解析

  • 第23题:

    单选题
    public class Test{ public static void main(String[]args){ intx=5; boolean b1=true; boolean b2=false; if((x==4)&&!b2) System.out.print("l"); System.out.print("2"); if((b2=true)&&b1) System.out.print("3"); } } What is the result?()
    A

    2

    B

    3

    C

    12

    D

    23

    E

    123

    F

    Compilation fails.

    G

    An exceptional ist hrown at runtime.


    正确答案: B
    解析: 暂无解析