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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
| Flow Control and Exceptions | 15% | - Control structures
- 1. Break, continue, and assertions
- 2. if/else, switch, loops
- Exception handling
- 1. try, catch, finally, throw, throws
- 2. Exception hierarchy
|
| Concurrency | 10% | - Synchronization and thread safety
- Thread creation and lifecycle
|
| Java I/O | 10% | - Reading/writing files and character encoding
- File and stream classes
|
| Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
- 1. Overloading and overriding
- 2. Access modifiers and encapsulation
- 3. Polymorphism and casting
|
| Java API: java.lang | 15% | - Math and Object class
- Wrapper classes
- String and StringBuffer
|
| Collections and Generics | 15% | - Generics fundamentals
- Collection framework
- 1. List, Set, Map, and Queue
- 2. Comparable and Comparator
|
| Java Basics | 15% | - Language fundamentals
- 1. Variable scope and initialization
- 2. Identifiers, keywords, and data types
|
Oracle Java Certified Programmer Sample Questions:
1. Exhibit:
1 . public class test {
2 .public static void add3 (Integer i) }
3 .int val = i.intValue ( );
4 .val += 3;
5 .i = new Integer (val);
6 .}
7 .
8 . public static void main (String args [ ] ){
9 .Integer i = new Integer (0);
1 0.add3 (i);
1 1.system.out.printIn (i.intValue ( ));
1 2.}
1 3.)
What is the result?
A) Compilation will fail.
B) The program prints "3".
C) The program prints "0".
D) Compilation will succeed but an exception will be thrown at line 3.
2. Given:
1 . public class foo {
2 . public static void main (string[]args)
3 . try {return;}
4 . finally {system.out.printIn("Finally");}
5 . }
6 . )
What is the result?
A) The code compiles, but an exception is thrown at runtime.
B) The program runs and prints "Finally"
C) The code will not compile because the catch block is missing.
D) The program runs and prints nothing.
3. 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) Protected float setVar() {x=3.0f; return 3.0f; }
C) Public void setVar(int f) {x = f;}
D) Void setVar(float f) {x = f;}
E) Public double setVar(float f) {x = f;}
F) Public void setVar(float f) {x = f;}
4. Given:
1 . public class ConstOver {
2 . public ConstOver (int x, int y, int z){
3 .}
4 . }
Which two overload the ConstOver constructor? (Choose Two)
A) Public void ConstOver (byte x, byte y, byte z) { }
B) Private ConstOver (int z, int y, byte x) { }
C) Public Object ConstOver (int x, int y, int z) { }
D) ConstOver ( ) { }
E) Protected int ConstOver ( ) { }
5. Given:
1 . public abstract class Test {
2 . public abstract void methodA();
3 .
4 . public abstract void methodB()
5 . {
6 . System.out.printIn("Hello");
7 .}
8 . }
Which three changes (made independently) allow the code to compile? (Choose Three)
A) Remove the abstract qualifier from the declaration of Test.
B) Add a method body to methodA.
C) Replace lines 5-7 with a semicolon (".")
D) Remove the abstract qualifier from the declaration of methodA.
E) Remove methodB in its entirely and change class o interface in line 1.
F) Remove the abstract qualifier from the declaration of methodB.
Solutions:
Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: A,F | Question # 4 Answer: B,D | Question # 5 Answer: C,E,F |