Mock Test 4   Question 1.          Read this piece of code carefully if("String".toString() == "String")     System.out.println("Equal"); else     System.out.println("Not Equal"); Answers   the code will compile an print "Equal". the code will compile an print "Not Equal". the code will cause a compiler error. Question 2.          Read this piece of code carefully   if(" String ".trim() == "String")     System.out.println("Equal"); else     System.out.println("Not Equal"); Answers the code will compile an print "Equal". the code will compile an print "Not Equal". the code will cause a compiler error Question 3. Read the code below. Will be the result of attempting to compile and run the code below.   public class AQuestion {      public void method(Object o)      {          System.out.println("Object Verion");      }  public void method(String s)  {     System.out.println("String Version");  }  public static void main(String args[])  {      AQuestion question = new AQuestion();      question.method(null);  } } Answers The code does not compile. The code compiles cleanly and shows "Object Version". The code compiles cleanly and shows "String Version" The code throws an Exception at Runtime.   Question 4. Read the code below. Will be the result of attempting to compile and run the code below.   public class AQuestion {      public void method(StringBuffer sb)      {          System.out.println("StringBuffer Verion");      }  public void method(String s)  {     System.out.println("String Version");  }  public static void main(String args[])  {      AQuestion question = new AQuestion();      question.method(null);  } } Answers The code does not compile. The code compiles cleanly and shows "StringBuffer Version". The code compiles cleanly and shows "String Version" The code throws an Exception at Runtime. Question 5.     Read the following code below. public interface AQuestion {      public abstract void someMethod() throws Exception; } A Class implementing this interface should   Necessarily be an abstract class. Should have the method public abstract void someMethod(); Should have the method public void someMethod() which has to throw an exception which is a subclass of java.lang.Exception. Should have the method public void someMethod() which need not throw an Exception. Question 6.         An Interface can never be private or protected. Answers         True         False   Question 7.       A Vector class in jdk 1.2 is public is final implements java.util.List is serializable has only One constructor   Question 8.      A String Class is final is public is serializable has a constructor which takes a StingBuffer Object as an Argument   Question 9.   public interface AQuestion {      void someMethod(); } The class which implements AQuestion Should have someMethod which must necessarily be public. Should have someMethod which could be "friendly" or public Should have someMethod which should not throw any checked exceptions. Should have someMethod which cannot be sychronized as sychronized is not in the signature of the interface defination   Question 10.   public class AQuestion {  private int i = j;  private int j = 10;  public static void main(String args[])  {       System.out.println((new AQuestion()).i);  } } Answers Compiler error complaining about access restriction of private variables of AQuestion. Compiler error complaining about forward referencing. No error - The output is 0; No error - The output is 10;