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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

1. Given:
Integer i = new Integer (42);
Long 1 = new Long (42);
Double d = new Double (42.0);
Which two expressions evaluate to True? (Choose Two)

A) (i.equals (d))
B) (i ==1)
C) (i == d)
D) (d.equals (i))
E) (d == 1)
F) (i.equals (42))

2. Which gets the name of the parent directory file "file.txt"?

A) String name = (new File("file.txt")).getParentName();
B) Directory dir=(new File ("file.txt")).getParentDir();
String name= dir.getName();
C) String name= (new File("file.txt")).getParentFile();
D) String name= File.getParentName("file.txt");
E) String name= (new File("file.txt")).getParent();

3. Which statement is true for the class java.util.HashSet?

A) The collection is guaranteed to be immutable.
B) The elements in the collection are ordered.
C) The elements in the collection are guaranteed to be unique.
D) The elements in the collection are accessed using a unique key.
E) The elements in the collections are guaranteed to be synchronized.

4. Given:
1 . public class Foo implements Runnable (
2 . public void run (Thread t) {
3 . system.out.printIn("Running.");
4 . }
5 . public static void main (String[] args){
6 . new thread (new Foo()).start();
7 . )
8 .)
What is the result?

A) An error at line 1 causes compilation to fail.
B) An exception is thrown.
C) The program exists without printing anything.
D) "Running" is printed and the program exits.
E) An error at line 2 causes the compilation to fail.

5. Exhibit:
1 . import java.awt*;
2 .
3 .public class X extends Frame (
4 .public static void main(string []args)(
5 .X x = new X ();
6 . X.pack();
7 . x.setVisible(true);
8 .)
9 .
1 0. public X ()(
1 1. setlayout (new GridLayout (2,2));
1 2.
1 3. Panel p1 = new panel();
1 4. Add(p1);
1 5. Button b1= new Button ("One");
1 6. P1.add(b1);
1 7.
1 8. Panel p2 = new panel();
1 9. Add(p2);
2 0. Button b2= new Button ("Two");
2 1. P2.add(b2);
2 2.
2 3. Button b3= new Button ("Three");
2 4. add(b3);
2 5.
2 6. Button b4= new Button ("Four");
2 7. add(b4);
2 8.)
2 9. )
Which two statements are true? (Choose Two)

A) Both width and height of the button labeled "Three" might change if the Frame is resized.
B) All the buttons change width if the Frame width is resized.
C) The size of the button labeled "One" is constant even if the Frame is resized.
D) All the buttons change height if the frame height is resized.

Solutions: