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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Core Java APIs | - Collections and Utilities
|
| Java Language Fundamentals | - Language Basics
|
| Concurrency | - Threads
|
| Exception Handling | - Exceptions
|
| Input and Output | - I/O APIs
|
| Object-Oriented Programming | - Classes and Objects
|
Oracle Java Certified Programmer Sample Questions:
1. Exhibit:
1 . public class X {
2 . public static void main (String[]args) {
3 . String s1 = new String ("true");
4 . Boolean b1 = new Boolean (true);
5 . if (s2.equals(b1)){
6 . System.out.printIn("Equal");
7 .}
8 .}
9 .}
What is the result?
A) The program runs but aborts with an exception.
B) The program runs and prints nothing.
C) An error at line 5 causes compilation to fail.
D) The program runs and prints "Equal"
2. Given:
1 . public class SyncTest (
2 . private int x;
3 . private int y;
4 . private synchronized void setX (int i) (x=1;)
5 . private synchronized void setY (int i) (y=1;)
6 . public void setXY(int 1)(set X(i); setY(i);)
7 . public synchronized Boolean check() (return x !=y;)
8 . )
Under which conditions will check () return true when called from a different class?
A) Check() can only return true if SyncTest is changed to allow x and y to be set separately.
B) Check() can never return true.
C) Check() can return true when multiple threads call setX and setY separately.
D) Check() can return true when setXY is called by multiple threads.
3. Given:
1 . public class Foo {
2 . private int val;
3 . public foo(int v) (val = v;)}
4 . public static void main (String [] args){
5 . Foo a = new Foo (10);
6 . Foo b = new Foo (10);
7 . Foo c = a;
8 . int d = 10;
9 . double e = 10.0;
1 0. }
1 1. }
Which three logical expression evaluate to true? (Choose Three)
A) (b ==d)
B) (d ==e)
C) (a ==b)
D) (a ==c)
E) (b ==c)
F) (d ==10.0)
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. Which two demonstrate an "is a" relationship? (Choose Two)
A) public interface Color { }
public class Employee extends Color { }
B) public interface Shape { }
public class Employee extends Shape { }
C) public interface Person { }
public class Employee extends Person { }
D) public class Species { }
public class Animal (private Species species;)
E) interface Component { }
Class Container implements Component (
Private Component[ ] children;
)
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B,D,F | Question # 4 Answer: Only visible for members | Question # 5 Answer: D,E |




