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单选题
现有:  class  Parser extends  Utilis  {  public static void main (String  []  args)  {  try  {  System. out.print (new  Parser ( ) .getlnt ("42")} ;     }  catch (NumberFormatException n) {  System.out .println ( "NFExc" ) ;   }     }  int getlnt (String arg)  throws NumberFormatException{    return Integer.parselnt (arg) ;     }     class Utils {  int getlnt (String arg)  {  return 42;  }    }  结果为 :()
A

 NFExc

B

 42

C

 42NFExc

D

编译失败


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更多 “单选题现有:  class  Parser extends  Utilis  {  public static void main (String  []  args)  {  try  {  System. out.print (new  Parser ( ) .getlnt ("42")} ;     }  catch (NumberFormatException n) {  System.out .println ( "NFExc" ) ;   }     }  int getlnt (String arg)  throws NumberFormatException{    return Integer.parselnt (arg) ;     }     class Utils {  int getlnt (String arg)  {  return 42;  }    }  结果为 :()A  NFExcB  42C  42NFExcD 编译失败” 相关考题
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考题 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、 1B、 3C、 123D、 321E、 The code rims with no output.

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考题 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、 TestAB、 TestBC、 Compilation fails.D、 An exception is thrown at runtime.

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考题 现有:  class  Parser extends  Utilis  {  public static void main (String  []  args)  {  try  {  System. out.print (new  Parser ( ) .getlnt ("42")} ;     }  catch (NumberFormatException n) {  System.out .println ( "NFExc" ) ;   }     }  int getlnt (String arg)  throws NumberFormatException{    return Integer.parselnt (arg) ;     }     class Utils {  int getlnt (String arg)  {  return 42;  }    }  结果为 :()A、 NFExcB、 42C、 42NFExcD、编译失败

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考题 现有:      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();     )     }  运行结果是哪项?()     A、  TeStAB、  TeStBC、编译失败D、运行时抛出异常

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考题 public abstract class Shape {  private int x;  private int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  Which two classes use the Shape class correctly?()A、 public class Circle implements Shape { private int radius; }B、 public abstract class Circle extends Shape { private int radius; }C、 public class Circle extends Shape { private int radius; public void draw(); }D、 public abstract class Circle implements Shape { private int radius; public void draw(); }E、 public class Circle extends Shape { private int radius;public void draw() {/* code here */} }F、 public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }

考题 单选题现有:  class Top  {     static int X=l;  public Top()  {  x*=3; }     }  class Middle extends Top  {      public  Middle()    {x+=l;  }  public static void main(String  []  args)  {     Middle m=new Middle();    System.out.println (x);    }     }  结果是什么?()A   2B   3C   4D 编译失败

考题 单选题现有:  class  Parser extends  Utilis  {  public static void main (String  []  args)  {  try  {  System. out.print (new  Parser ( ) .getlnt ("42")} ;     }  catch (NumberFormatException n) {  System.out .println ( "NFExc" ) ;   }     }  int getlnt (String arg)  throws NumberFormatException{    return Integer.parselnt (arg) ;     }     class Utils {  int getlnt (String arg)  {  return 42;  }    }  结果为 :()A  NFExcB  42C  42NFExcD 编译失败

考题 单选题现有:   class Parser extends Utils {   public static void main(String [] args) {     System.out.print(new Parser().getInt("42"));    }   int getInt(String arg) {  return Integer.parseInt(arg);  }    }   class Utils {     int getInt(String arg) throws Exception { return 42; }    }    结果为()A  42B  编译失败。C  无输出结果。D  运行时异常被抛出。

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class Parser extends Utils {  public static void main(String [] args) {   System.out.print(new Parser().getInt("42"));  }  int getInt(String arg) {  return Integer.parseInt(arg);  }  }  class Utils {  int getInt(String arg) throws Exception { return 42; }  }  结果为:()A 42B 编译失败C 无输出结果D 运行时异常被抛出

考题 单选题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  1B  3C  123D  321E  The code rims with no output.

考题 单选题class Bird {  static void talk() { System.out.print("chirp "); }  }  class Parrot extends Bird {  static void talk() { System.out.print("hello "); }  public static void main(String [] args) {  Bird [] birds = {new Bird(), new Parrot()};  for( Bird b : birds)  b.talk();  }  }  结果为:()A chirp chirpB chirp helloC hello helloD 编译失败

考题 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 1B 2C 3D 编译失败

考题 单选题现有:      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();     )     }  运行结果是哪项?()A   TeStAB   TeStBC 编译失败D 运行时抛出异常

考题 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  TestAB  TestBC  Compilation fails.D  An exception is thrown at runtime.

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

考题 单选题现有:  class Parser (类)extends(继承) Utils {   public static void main(String [] args) {   System.out.print(输出打印)(new Parser().getInt("42"));  }   int getInt(String arg) {   return Integer.parseInt(arg);    }   }   class Utils {   int getInt(String arg) throws Exception { return 42; }  }   结果为:()A  42B  编译失败。C  无输出结果。D  运行时异常被抛出。