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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Flow Control and Exceptions | 15% | - Exception handling
|
| Topic 2: Java I/O | 10% | - File and stream classes - Reading/writing files and character encoding |
| Topic 3: Collections and Generics | 15% | - Collection framework
|
| Topic 4: Java Basics | 15% | - Language fundamentals
|
| Topic 5: Concurrency | 10% | - Thread creation and lifecycle - Synchronization and thread safety |
| Topic 6: Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
|
| Topic 7: Java API: java.lang | 15% | - Wrapper classes - String and StringBuffer - Math and Object class |
Oracle Java Certified Programmer Sample Questions:
Which two create an instance of an array? (Choose Two)
- A. char[] ca = "Some String";
- B. float fa = new float [20];
- C. Object oa = new float[20];
- D. int[] ia = new int [15];
- E. Int ia [][] = (4, 5, 6) (1, 2, 3)
Correct Answer: C,D 🗳️
Given:
1 . public class Foo {
2 . public static void main (String []args) {
3 . int i = 1;
4 . int j = i++;
5 . if ((i>++j) && (i++ ==j)){
6 .i +=j;
7 .}
8 .}
9 .}
What is the final value of i?
- A. 2
- B. 4
- C. 5
- D. 3
- E. 1
Correct Answer: A 🗳️
Exhibit:
1 . class super (
2 . public int I = 0;
3 .
4 . public super (string text) (
5 . I = 1
6 .)
7 .)
8 .
9 . public class sub extends super (
1 0. public sub (string text) (
1 1. i= 2
1 2. )
1 3.
1 4. public static void main (straing args[]) (
1 5. sub sub = new sub ("Hello");
1 6. system.out. PrintIn(sub.i);
1 7.)
1 8. )
What is the result?
- A. Compilation will succeed and the program will print "0"
- B. Compilation will fail.
- C. Compilation will succeed and the program will print "1"
- D. Compilation will succeed and the program will print "2"
Correct Answer: B 🗳️
Exhibit:
1 . import java.awt.*;
2 .
3 . public class Test extends Frame {
4 . public Test(){
5 . add(new Label("Hello"));
6 . add(new TextField("Hello"));
7 . add(new Button("Hello"));
8 . pack();
9 . show();
1 0. }
1 1.
1 2. public static void main(String args[]) {
1 3.new Test ();
1 4.}
1 5. )
What is the result?
- A. A Window will appear containing a Label on the left, a TextField to the right of the Label, and abutton to the right of the TextField.
- B. A Window will appear containing only a Button.
- C. An IllegalArgumentException is thrown at line 6.
- D. A Window button will appear but will not contain the Label, TextField, or Button.
- E. A Window will appear containing a Label at the top, a TextField below the Label, and a Buttonbelow the TextField.
- F. The code will not compile.
Correct Answer: B 🗳️
Which method in the Thread class is used to create and launch a new thread of execution?
- A. Start();
- B. Run(Runnable r);
- C. Run();
- D. Execute(Thread t);
- E. Start(Runnable r);
- F. Execute();
Correct Answer: A 🗳️
