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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Concurrency | 10% | - Synchronization and thread safety - Thread creation and lifecycle |
| Java I/O | 10% | - File and stream classes - Reading/writing files and character encoding |
| Java API: java.lang | 15% | - String and StringBuffer - Math and Object class - Wrapper classes |
| Java Basics | 15% | - Language fundamentals
|
| Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
|
| Flow Control and Exceptions | 15% | - Exception handling
|
| Collections and Generics | 15% | - Generics fundamentals - Collection framework
|
Oracle Java Certified Programmer Sample Questions:
Which statement is true?
- A. The Error class is a untimeException.
- B. Any statement that may thro a runtimeException must be enclosed in a try block.
- C. Any statement that may throw an Error must be enclosed in a try block.
- D. No exceptions are subclasses of Error.
- E. Any statement that may throw an Exception must be enclosed in a try block.
Given:
1 . public class test(
2 . public static void main(string[]args){
3 . string foo = args [1];
4 . string foo = args [2];
5 . string foo = args [3];
6 . }
7 .}
And command line invocation:
Java Test red green blue
What is the result?
- A. Baz has the value of "red"
- B. Baz has the value of ""
- C. Baz has the value of null
- D. The code does not compile.
- E. Baz has the value of "blue"
- F. Bax has the value of "green"
- G. The program throws an exception.
Which type of event indicates a key pressed on a java.awt.Component?
- A. KeyPressedEvent
- B. KeyEvent
- C. KeyPressEvent
- D. KeyDownEvent
- E. KeyTypedEvent
Given:
1. class BaseClass {
2. Private float x = 1.0f ;
3. protected float getVar ( ) ( return x;)
4. }
5 . class Subclass extends BaseClass (
6 .private float x = 2.0f;
7 .//insert code here
8 . )
Which two are valid examples of method overriding? (Choose Two)
- A. Public float getVar ( ) { return x;}
- B. Public float getVar (float f ) { return f;}
- C. Public float getVar ( ) { return x;}
- D. Float getVar ( ) { return x;}
- E. Float double getVar ( ) { return x;}
Which two are equivalent? (Choose Two)
- A. 3<<2
- B. 3/2
- C. 3*4
- D. 3<2
- E. 3<<<2
- F. 3*2^2
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