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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Advanced Concepts | - Collections Framework - Multithreading Basics |
| Topic 2: Java Fundamentals | - Language Syntax and Structure - Data Types and Variables |
| Topic 3: Core Java APIs | - Exception Handling - java.lang and java.util Packages |
| Topic 4: Object-Oriented Programming | - Encapsulation and Abstraction - Inheritance and Polymorphism - Classes and Objects |
Oracle Java Certified Programmer Sample Questions:
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 BordrLayout());
1 2. Panel p = new Panel ();
1 3. add(p, BorderLayout.NORTH);
1 4. Button b = new Button ("North");
1 5. p.add(b):
1 6. Button b = new Button ("South");
1 7. add(b1, BorderLayout.SOUTH):
1 8.}
1 9.}
Which two statements are true? (Choose Two)
- A. The buttons labeled "North" and "South" will have the same height.
- B. The width of the button labeled "North" is constant even if the Frame is resized.
- C. The height of the button labeled "South" can very if the Frame is resized.
- D. The buttons labeled "North" and "South" will have the same width.
- E. The height of the button labeled "North" can very if the Frame is resized.
- F. The width of the button labeled "South" is constant even if the Frame is resized.
Correct Answer: A,B 🗳️
Exhibit:
1 . public class test (
2 . public static void main(string args[]) {
3 . int 1= 0;
4 . while (i){
5 . if (i==4) {
6 . break;
7 .)
8 .++i;
9 .)
1 0.
1 1. )
1 2. )
What is the value of i at line 10?
- A. 5
- B. 0
- C. 3
- D. The code will not compile.
- E. 4
Correct Answer: D 🗳️
Given:
1 . class BaseClass{
2 . private float x= 1.0f;
3 . protected void setVar (float f) {x = f;}
4 . }
5 . class SubClass exyends BaseClass {
6 . private float x = 2.0f;
7 . //insert code here
8 .}
Which two are valid examples of method overriding? (Choose Two)
- A. Public final void setVar(float f) {x = f;}
- B. Public double setVar(float f) {x = f;}
- C. Protected float setVar() {x=3.0f; return 3.0f; }
- D. Public void setVar(int f) {x = f;}
- E. Void setVar(float f) {x = f;}
- F. Public void setVar(float f) {x = f;}
Correct Answer: A,F 🗳️
Given:
1 . abstract class abstrctIt {
2 . abstract float getFloat ();
3 . )
4 . public class AbstractTest extends AbstractIt {
5 . private float f1= 1.0f;
6 . private float getFloat () {return f1;}
7 . }
What is the result?
- A. Compilation is successful.
- B. An error at line 6 causes compilation to fail.
- C. An error at line 2 causes compilation to fail.
- D. An error on line 6 causes a runtime failure.
Correct Answer: B 🗳️
Which constructs a DataOutputStream?
- A. New dataOutputStream(new file("out.txt"));
- B. New dataOutputStream(new FileWriter("out.txt"));
- C. New dataOutputStream(new OutputStream("out.txt"));
- D. New dataOutputStream(new FileOutputStream("out.txt"));
- E. New dataOutputStream(new writer("out.txt"));
- F. New dataOutputStream("out.txt");
Correct Answer: D 🗳️
