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"Java Certified Programmer", also known as 1Z0-501 exam, is a Oracle Certification. With the complete collection of questions and answers, ExamcollectionPass has assembled to take you through 147 Q&As to your 1Z0-501 Exam preparation. In the 1Z0-501 exam resources, you will cover every field and category in Other Oracle Certification Certification helping to ready you for your successful Oracle Certification.
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Java Basics | 15% | - Language fundamentals
|
| Topic 2: Flow Control and Exceptions | 15% | - Control structures
|
| Topic 3: Java API: java.lang | 15% | - Math and Object class - String and StringBuffer - Wrapper classes |
| Topic 4: Java I/O | 10% | - Reading/writing files and character encoding - File and stream classes |
| Topic 5: Concurrency | 10% | - Thread creation and lifecycle - Synchronization and thread safety |
| Topic 6: Collections and Generics | 15% | - Collection framework
|
| Topic 7: Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
|
1. Given:
1 . public class WhileFoo {
2 . public static void main (String []args){
3 . int x= 1, y = 6;
4 . while (y--){x--;}
5 . system.out.printIn("x=" + x "y =" + y);
6 .}
7 . }
What is the result?
A) The output is x = 7 y = -1
B) The output is x = 6 y = 0
C) Compilation will fail.
D) The output is x = 7 y = 0
E) The output is x = 6 y = -1
2. 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) (d ==10.0)
B) (b ==d)
C) (d ==e)
D) (b ==c)
E) (a ==c)
F) (a ==b)
3. Exhibit
1 . public class SyncTest{
2 . public static void main(String[] args){
3 . final StringBuffer s1= new StringBuffer();
4 . final StringBuffer s2= new StringBuffer();
5 . new Thread (){
6 .public void run() {
7 .synchronized(s1) {
8 .s2.append("A");
9 .synchronized(s2) {
1 0. s2.append("B");
1 1.System.out.print(s1);
1 2.System.out.print(s2);
1 3. }
1 4.}
1 5.}
1 6. }.start();
1 7. new Thread() {
1 8. public void run() {
1 9.synchronized(s2) {
2 0.s2.append("C");
2 1.synchronized(s1) {
2 2.s1.append("D");
2 3.System.out.print(s2);
2 4.System.out.print(s1);
2 5.}
2 6.}
2 7.}
2 8.}.start();
2 9.}
3 0. }
Which two statements are true? (Choose Two)
A) The program prints "ADCBADBC"
B) The output is a non-deterministic point because of a possible deadlock condition.
C) The output is dependent on the threading model of the system the program is running on.
D) The program prints "CDDACB"
E) The program prints "ABBCAD"
4. You want to limit access to a method of a public class to members of the same class.
Which access modifier accomplishes this objective?
A) Transient
B) Public
C) Protected
D) Private
E) No access modifier is required
5. CORRECT TEXT
Given:
5. String foo = "base";
6. foo.substring(0,3);
7. foo.concat("ket")
8. Type the value of foo at line 8.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A,C,E | Question # 3 Answer: B,D | Question # 4 Answer: D | Question # 5 Answer: Only visible for members |
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