考试网 >> IT认证 >> JAVA >> JAVA题库 >> JAVA题库:格林模拟试题三（下）

发布时间：2006-06-28 10:52     点击：

2) To be overridden a method only needs the same name and parameter types

3) To be overridden a method must have the same name, parameter and return types

4) An overridden method must have the same name, parameter names and parameter types

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Question 47)

What will happen when you attempt to compile and run the following code?

class Base{
Base(){System.out.println("Base");}
}public class Checket extends Base{
public static void main(String argv[]){Checket c = new Checket();super();}Checket(){System.out.println("Checket");  }       
}

1) Compile time error

2) Checket followed by Base

3) Base followed by Checket

4) runtime error

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Question 48)

Which of the following statements are true?

1) Static methods cannot be overriden to be non static

2) Static methods cannot be declared as private

3) Private methods cannot be overloaded

4) An overloaded method cannot throw exceptions not checked in the base class

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Question 49)

Which of the following statements are true?

1) The automatic garbage collection of the JVM prevents programs from ever running out of memory

2) A program can suggest that garbage collection be performed but not force it

3) Garbage collection is platform independent

4) An object becomes eligible for garbage collection when all references denoting it are set to null.

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Question 50)

Given the following code

public class Sytch{
int x=2000;
public static void main(String argv[]){System.out.println("Ms "+argv[1]+"Please pay $"+x);}}

What will happen if you attempt to compile and run this code with the command line

java Sytch Jones Diggle

1) Compilation and output of Ms Diggle Please pay $2000

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