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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Java Basics | 15% | - Language fundamentals
|
| Collections and Generics | 15% | - Generics fundamentals - Collection framework
|
| Java API: java.lang | 15% | - Math and Object class - String and StringBuffer - Wrapper classes |
| Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
|
| Concurrency | 10% | - Synchronization and thread safety - Thread creation and lifecycle |
| Java I/O | 10% | - Reading/writing files and character encoding - File and stream classes |
| Flow Control and Exceptions | 15% | - Control structures
|
Oracle Java Certified Programmer Sample Questions:
1. You need to store elements in a collection that guarantees that no duplicates are stored.
Which two interfaces provide that capability? (Choose Two)
A) Java.util.Set
B) Java.util.StoredMap
C) Java.util.StoredSet
D) Java.util.Collection
E) Java.util.Map
F) Java.util.List
2. Exhibit:
1 . public class test(
2 . public int aMethod()[
3 . static int i=0;
4 . i++;
5 . return I;
6 . )
7 . public static void main (String args[]){
8 . test test = new test();
9 . test.aMethod();
1 0.int j = test.aMethod();
1 1.System.out.printIn(j);
1 2.]
1 3.}
What is the result?
A) Compilation will succeed and the program will print "2"
B) Compilation will succeed and the program will print "0"
C) Compilation will fail.
D) Compilation will succeed and the program will print "1"
3. Which statement is true?
A) An anonymous inner class can be declared as private.
B) An anonymous inner class may be declared as final.
C) Construction of an instance of a static inner class requires an instance of the enclosing outer class.
D) An anonymous inner class can access final variables in any enclosing scope.
E) An anonymous inner class can implement multiple interfaces.
4. CORRECT TEXT
Given:
AnInterface is an interface.
AnAdapter0 is a non-abstract, non-final class with a zero argument constructor.
AnAdapter1 is a non-abstract, non-final class without a zero argument constructor, but with a constructor that takes one int argument.
Which two construct an anonymous inner class? (Choose Two)
F.AnAdapter1 aa=new AnAdapter1(){}
G.AnAdapter0 aa=new AnAdapter0(){}
H.AnAdapter0 aa=new AnAdapter0(5){}
I.AnAdapter1 aa=new AnAdapter1(5){}
J.AnInterface a1=new AnInterface(5){}
5. 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) An exception is thrown.
C) Foo has the value of null.
D) The code will not compile.
E) Foo has the value of 0.
F) Foo has the value of false.
Solutions:
| Question # 1 Answer: A,C | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: Only visible for members | Question # 5 Answer: F |

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