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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Java I/O | 10% | - File and stream classes - Reading/writing files and character encoding |
| Topic 2: Collections and Generics | 15% | - Collection framework
|
| Topic 3: Concurrency | 10% | - Thread creation and lifecycle - Synchronization and thread safety |
| Topic 4: Java Basics | 15% | - Language fundamentals
|
| Topic 5: Java API: java.lang | 15% | - Math and Object class - String and StringBuffer - Wrapper classes |
| Topic 6: Flow Control and Exceptions | 15% | - Exception handling
|
| Topic 7: Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
|
Oracle Java Certified Programmer Sample Questions:
Exhibit:
1 . class A implements runable (
2 . int i;
3 . public void run () (
4 . try (
5 . thread.sleep(5000);
6 . i= 10;
7 .) catch(InterruptedException e) {}
8 .)
9 .)
1 0.
1 1. public class Test {
1 2. public static void main (string args[]) (
1 3. try (
1 4. A a = new A ();
1 5. Thread t = new Thread (a);
1 6. t.start();
1 7.
1 8. int j= a.i;
1 9.
2 0. ) catch (Exception e) {}
2 1. )
2 2. )
Which statement al line 17 will ensure that j=10 at line 19?
- A. t.interrupt();
- B. a.wait();
- C. t.join();
- D. t.notify();
- E. t.wait();
- F. a.notify();
- G. t.yield();
Correct Answer: C 🗳️
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. An error at line 2 causes compilation to fail.
- B. An error on line 6 causes a runtime failure.
- C. An error at line 6 causes compilation to fail.
- D. Compilation is successful.
Correct Answer: C 🗳️
What writes the text "<end>" to the end of the file "file.txt"?
- A. OutputStream os= new FileOutputStream ("file.txt");
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n"); - B. OutputStream os= new FileOutputStream ("file.txt", true);
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n"); - C. OutputStream out= new FileOutputStream ("file.txt");
Out.writeBytes ("<end>/n"); - D. OutputStream os= new OutputStream ("file.txt", true);
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
Correct Answer: B 🗳️
Given:
8 . int index = 1;
9 . boolean[] test = new Boolean[3];
1 0. boolean foo= test [index];
What is the result?
- A. Foo has the value of true.
- B. Foo has the value of 0.
- C. An exception is thrown.
- D. The code will not compile.
- E. Foo has the value of null.
- F. Foo has the value of false.
Correct Answer: F 🗳️
Given:
1 . public class Foo {
2 . public void main (String [] args){
3 .system.out.printIn("Hello World.");
4 .}
5 .}
What is the result?
- A. An exception is thrown.
- B. The code does no compile.
- C. "Hello World." Is printed to the terminal.
- D. The program exits without printing anything.
Correct Answer: A 🗳️
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