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多选题
1. class Calc {  2. public static void main(String [] args) {  3. try {  4. int x = Integer.parseInt("42a");  5. //insert code here  6. System.out.print("oops ");  7. }  8. }  9. }  下面哪两行分别插入到第五行,会导致输出“oops”?()
A

} catch (ClassCastException c) {

B

} catch (IllegalStateException c) {

C

} catch (NumberFormatException n) {

D

} catch (IllegalArgumentException e) {


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更多 “多选题1. class Calc {  2. public static void main(String [] args) {  3. try {  4. int x = Integer.parseInt("42a");  5. //insert code here  6. System.out.print("oops ");  7. }  8. }  9. }  下面哪两行分别插入到第五行,会导致输出“oops”?()A} catch (ClassCastException c) {B} catch (IllegalStateException c) {C} catch (NumberFormatException n) {D} catch (IllegalArgumentException e) {” 相关考题
考题 classCalc{2.publicstaticvoidmain(String[]args){3.try{4.intx=Integer.parseInt(42a);5.//insertcodehere6.System.out.print(oops);7.}8.}9.}下面哪两行分别插入到第五行,会导致输出oops”?() A.}catch(ClassCastExceptionc){B.}catch(IllegalStateExceptionc){C.}catch(NumberFormatExceptionn){D.}catch(IllegalArgumentExceptione){

考题 现有1.classCalc{2.publicstaticvoidmain(String[]args){3.try{4.intx=Integer.parselnt(42a);5.//insertcodehere6.System.out.print(oops);7.}8.}9.}下面哪两行分别插入到第五行,会导致输oops?() A.}catch(IllegalArgumentExceptione){B.}catch(IllegalStateExceptionc){C.}catch(NumbelFormatExceptionn){D.}catch(ClassCastExceptionc){

考题 1. public interface A {  2. public void doSomething(String thing);  3. }  1. public class AImpl implements A {  2. public void doSomething(String msg) { }  3. }  1. public class B {  2. public A doit() {  3. // more code here  4. }  5.  6. public String execute() { 7. // more code here  8. }  9. }  1. public class C extends B {  2. public AImpl doit() {  3. // more code here  4. }  5.  6. public Object execute() {  7. // more code here  8. }  9. }  Which statement is true about the classes and interfaces in the exhibit?() A、 Compilation will succeed for all classes and interfaces.B、 Compilation of class C will fail because of an error in line 2.C、 Compilation of class C will fail because of an error in line 6.D、 Compilation of class AImpl will fail because of an error in line 2.

考题 现有:   1.  class HorseRadish {   2.    // insert code here   3.    protected HorseRadish(int x) {    4.      System.out.println("bok choy");  5.    }  6.  }   7.  class Wasabi extends HorseRadish {   8.    public static void main(String [] args) {   9.      Wasabi w = new Wasabi();  10.   }    11. }   分别插入到第 2 行,哪两项允许代码编译并产生"bok choy" 输出结果?() A、 // just a commentB、 protected HorseRadish() { }C、 protected HorseRadish() { this(42);}D、 protected  HorseRadish() { new HorseRadish (42);}

考题 现有2 个文件:  1. package x;  2. public class X {  3. public static void doX() { System.out.print("doX "); }  4. }  和:  1. class Find {  2. public static void main(String [] args) {  3. //insert code here  4. }  5. }  哪两行分别插入到类Find 的第3 行将编译并产生输出“doX”? ()A、doX();B、X.doX();C、x.X.doX();D、x.X myX = new x.X(); myX.doX();

考题 1. import java.util.*;  2. class ForInTest {  3. static List list = new ArrayList();  4.  5. static List getList() { return list; }  6.  7. public static void main(String [] args) {  8. list.add("a"); list.add("b"); list.add("c");  9. // insert code here  10. System.out.print(o);  11. }  12. } 第 9 行插入哪一项将输出 abc?() A、for(char o: list)B、for(Object o: getList())C、for(Object o: getList();)D、for(Object o: o.getList())

考题 现有:   1. class Book {   2. private final void read() { System.out.print("book "); }   3. }   4. class Page extends Book {   5. public static void main(String [] args) {   6. // insert code here   7. }   8. private final void read() { System.out.print("page "); }   9. }   和如下三个代码片段( x, y, z ):   x. // just a comment   y. new Page().read();  z. new Book().read();   分别插入到第6行,有几个允许代码通过编译并可以运行且无异常?() A、 0B、 1C、 2D、 3

考题 1. class Calc {  2. public static void main(String [] args) {  3. try {  4. int x = Integer.parseInt("42a");  5. //insert code here  6. System.out.print("oops ");  7. }  8. }  9. }  下面哪两行分别插入到第五行,会导致输出“oops”?()A、} catch (ClassCastException c) {B、} catch (IllegalStateException c) {C、} catch (NumberFormatException n) {D、} catch (IllegalArgumentException e) {

考题 5. class Order2 implements Runnable {  6. public void run() {  7. for(int x = 0; x 〈 4; x++) {  8. try { Thread.sleep(100); } catch (Exception e) { }  9. System.out.print("r");  10. } }  11. public static void main(String [] args) {  12. Thread t = new Thread(new Order2());  13. t.start();  14. for(int x = 0; x 〈 4; x++) {  15. // insert code here  16. System.out.print("m");  17. } } }  哪一个插入到第15行,最有可能产生输出 rmrmrmrm ?()  A、Thread.sleep(1);B、Thread.sleep(100);C、Thread.sleep(1000);D、try { Thread.sleep(100); } catch (Exception e) { }

考题 1. class SuperFoo {  2. SuperFoo doStuff(int x) {  3. return new SuperFoo(); 4. }  5. }  6.  7. class Foo extends SuperFoo {  8. //insert code here  9. }   下面哪三项分别插入到第8行,可以编译?()A、int doStuff() { return 42; }B、int doStuff(int x) { return 42; }C、Foo doStuff(int x) { return new Foo(); }D、SuperFoo doStuff(int x) { return new Foo(); }

考题 1. class MyThread implements Runnable {  2. public void run() {  3. System.out.print("go ");  4. }  5.  6. public static void main(String [] args) {  7. // insert code here  8. t.start(); 9. }  10. }  和如下四句:  Thread t = new MyThread(); MyThread t = new MyThread();  Thread t = new Thread(new Thread());  Thread t = new Thread(new MyThread());  分别插入到第5行,有几个可以通过编译?() A、0B、1C、2D、3

考题 现有2个文件:      package x;      public class X{  public static void doX()  {System.out.print("doX");}      }   和:  class Find{  public static void main(String  []  args)  {    //insert code here      }     }  哪两行分别插入到类Find的第3行将编译并产生输出“doX”?()A、doX();B、X.doX();C、x.X.doX();D、x.X myX=new x.X();myX.doX();

考题 现有:  5.  class Order2 implements Runnable  {     6.    public void run()  {     7. for (int x- o;  x4;  x++)  {  8. try{Thread.sleep(100);  )catch  (Exception e)  {  }     9.    System.out.print("r");     10.    }  }  11.    public static void main(string  []  args)  {     12.    Thread t=new Thread(new order2());     13.    t.start();  14.    for(int x=0;  x4;  x++)  {     15.    //insert code here     16.    System.out.print("m");     17.  }  }  }  哪一个插入到第15行,最有可能产生输出 rmrmrmrm?()     A、  Thread.sleep(1);B、  Thread.sleep(100);C、  Thread.sleep(1000);D、  try{  Thread.sleep(1);  )  catch  (Exception e)  {  }E、  try{Thread.sleep(100);  )  catch  (Exception  e)  {  }F、  try{Thread.sleep(1000);  ) catch  (Exception  e)  { }

考题 1. public class enclosingone (  2. public class insideone{}  3. )  4. public class inertest(  5. public static void main (string[]args)(  6. enclosingone eo= new enclosingone ();  7. //insert code here  8. )  9. )    Which statement at line 7 constructs an instance of the inner class?()  A、 InsideOnew ei= eo.new InsideOn();B、 Eo.InsideOne ei = eo.new InsideOne();C、 InsideOne ei = EnclosingOne.new InsideOne();D、 EnclosingOne.InsideOne ei = eo.new InsideOne();

考题 class Flow {  public static void main(String [] args) {  try {  System.out.print("before ");  doRiskyThing();  System.out.print("after ");  } catch (Exception fe) {  System.out.print("catch ");  }  System.out.println("done ");  }   public static void doRiskyThing() throws Exception {  // this code returns unless it throws an Exception  } }  可能会产生下面哪两项结果?() A、beforeB、before catchC、before after doneD、before catch done

考题 Given  1.  public class Foo {  2.  public static void main (String [] args) }  3.  try { return;}  4.  finally { Syste.out.printIn (“Finally”);}  5. }  6. }   What is the result( )?A、 The program runs and prints nothing.B、 The program runs and prints “Finally”.C、 The code comiles. But an exception is thrown at runtime.D、 The code will not compile because the catch block is missing.

考题 3. import java.util.*;   4. class ForInTest {   5. static List list = new ArrayList();   6.   7. public static void main(String [] args) {   8. list.add("a"); list.add("b"); list.add("c");   9. //insert code here   10. System.out.print(o);   11. }   12. }   哪一行插入到第9行将导致输出“abc”?()  A、 for(Object o : list)B、 for(Iterator o : list)C、 for(Object o : list.iterator())D、 for(Iterator o : list.iterator(); o.hasNext (); )

考题 1. import java.util.*;  2.  3. Class FindStuff {  4. public static void  main(String [] args) {  5. // insert code here  6. c.put("x", 123);  7. }  8. } 分别插入到第5行,哪三行允许代码编译?() A、Map c = new SortedMap();B、HashMap c = new HashMap();C、HashMap c = new Hashtable();D、SortedMap c = new TreeMap();

考题 现有   1. class Calc {  2.  public static void main(String [] args) {   3.    try {  4.         int x = Integer.parselnt ("42a") ;   5.     //insert code here  6.         System.out.print ("oops");   7.    }   8.   }   9. }   下面哪两行分别插入到第五行,会导致输 "oops" ? () A、 } catch (IllegalArgumentException e) {B、 } catch (IllegalStateException c) {C、 } catch (NumbelFormatException n) {D、 } catch (ClassCastException c) {

考题 多选题1. class SuperFoo {  2. SuperFoo doStuff(int x) {  3. return new SuperFoo(); 4. }  5. }  6.  7. class Foo extends SuperFoo {  8. //insert code here  9. }   下面哪三项分别插入到第8行,可以编译?()Aint doStuff() { return 42; }Bint doStuff(int x) { return 42; }CFoo doStuff(int x) { return new Foo(); }DSuperFoo doStuff(int x) { return new Foo(); }

考题 多选题现有2个文件:      package x;      public class X{  public static void doX()  {System.out.print("doX");}      }   和:  class Find{  public static void main(String  []  args)  {    //insert code here      }     }  哪两行分别插入到类Find的第3行将编译并产生输出“doX”?()AdoX();BX.doX();Cx.X.doX();Dx.X myX=new x.X();myX.doX();

考题 多选题现有:   1.  class HorseRadish {   2.    // insert code here   3.    protected HorseRadish(int x) {    4.      System.out.println("bok choy");  5.    }  6.  }   7.  class Wasabi extends HorseRadish {   8.    public static void main(String [] args) {   9.      Wasabi w = new Wasabi();  10.   }    11. }   分别插入到第 2 行,哪两项允许代码编译并产生"bok choy" 输出结果?()A// just a commentBprotected HorseRadish() { }Cprotected HorseRadish() { this(42);}Dprotected  HorseRadish() { new HorseRadish (42);}

考题 多选题现有2 个文件:  1. package x;  2. public class X {  3. public static void doX() { System.out.print("doX "); }  4. }  和:  1. class Find {  2. public static void main(String [] args) {  3. //insert code here  4. }  5. }  哪两行分别插入到类Find 的第3 行将编译并产生输出“doX”? ()AdoX();BX.doX();Cx.X.doX();Dx.X myX = new x.X(); myX.doX();

考题 多选题class Flow {  public static void main(String [] args) {  try {  System.out.print("before ");  doRiskyThing();  System.out.print("after ");  } catch (Exception fe) {  System.out.print("catch ");  }  System.out.println("done ");  }   public static void doRiskyThing() throws Exception {  // this code returns unless it throws an Exception  } }  可能会产生下面哪两项结果?()AbeforeBbefore catchCbefore after doneDbefore catch done

考题 单选题5. class Order2 implements Runnable {  6. public void run() {  7. for(int x = 0; x 〈 4; x++) {  8. try { Thread.sleep(100); } catch (Exception e) { }  9. System.out.print("r");  10. } }  11. public static void main(String [] args) {  12. Thread t = new Thread(new Order2());  13. t.start();  14. for(int x = 0; x 〈 4; x++) {  15. // insert code here  16. System.out.print("m");  17. } } }  哪一个插入到第15行,最有可能产生输出 rmrmrmrm ?()A Thread.sleep(1);B Thread.sleep(100);C Thread.sleep(1000);D try { Thread.sleep(100); } catch (Exception e) { }

考题 多选题1. import java.util.*;  2.  3. Class FindStuff {  4. public static void  main(String [] args) {  5. // insert code here  6. c.put("x", 123);  7. }  8. } 分别插入到第5行,哪三行允许代码编译?()AMap c = new SortedMap();BHashMap c = new HashMap();CHashMap c = new Hashtable();DSortedMap c = new TreeMap();

考题 多选题现有   1. class Calc {  2.  public static void main(String [] args) {   3.    try {  4.         int x = Integer.parselnt ("42a") ;   5.     //insert code here  6.         System.out.print ("oops");   7.    }   8.   }   9. }   下面哪两行分别插入到第五行,会导致输 "oops" ? ()A} catch (IllegalArgumentException e) {B} catch (IllegalStateException c) {C} catch (NumbelFormatException n) {D} catch (ClassCastException c) {