Free Oracle 1Z0-808 Exam Questions

What will be the result of compiling and executing Test class?

package com.udayan.oca;

public class Test {

     public static void main(String[] args) {

         String str1 = " ";

         boolean b1 = str1.isEmpty();

         System.out.println(b1);

         str1.trim();

         b1 = str1.isEmpty();

         System.out.println(b1);

     }

}

Given the code fragment:

Given the code fragment:

What will be the result of compiling and executing Test class?

1. package com.udayan.oca;

2.  

3. import java.util.ArrayList;

4. import java.util.List;

5.  

6. public class Test {

7.      public static void main(String[] args) {

8.          List list = new ArrayList<>();

9.          list.add(100);

10.          list.add(200);

11.          list.add(100);

12.          list.add(200);

13.          list.remove(new Integer(100));

14.  

15.          System.out.println(list);

16.      }

17. }

What will be the result of compiling and executing Test class?

1. //Test.java

2. package com.udayan.oca;

3.  

4. import java.io.FileNotFoundException;

5.  

6. public class Test {

7.      public static void main(String[] args) {

8.          try {

9.              System.out.println(1);

10.          } catch (NullPointerException ex) {

11.              System.out.println("ONE");

12.          } catch (FileNotFoundException ex) {

13.              System.out.println("TWO");

14.          }

15.          System.out.println("THREE");

16.      }

17. }