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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Concurrency | - Threads
|
| Object-Oriented Programming | - Classes and Objects
|
| Exception Handling | - Exceptions
|
| Java Language Fundamentals | - Language Basics
|
| Core Java APIs | - Collections and Utilities
|
| Input and Output | - I/O APIs
|
Oracle Java Certified Programmer Sample Questions:
1. Given:
1 . public class test (
2 . public static void main (String args[]){
3 .int i = 0xFFFFFFF1;
4 .int j = ~i;
5 .
6 .}
7 . )
What is the decimal value of j at line 5?
A) 14
B) 0
C) -15
D) An error at line 3 causes compilation to fail.
E) 1
F) An error at line 4 causes compilation to fail.
2. Which two valid declarations of a char? (Choose Two)
A) Char ch = (char) true;
B) Char ch = 'cafe';
C) Char ch = '\ucafe';
D) Char ch = "a";
E) Char ch = '\' ';
F) Char ch = '\u10100';
G) Char ch = "cafe";
3. Given:
1 . public class X (
2 . public object m () {
3 . object o = new float (3.14F);
4 . object [] oa = new object [1];
5 . oa[0]= o;
6 . o = null;
7 . return oa[0];
8 . }
9 . }
When is the float object created in line 3, eligible for garbage collection?
A) Just after line 5
B) Just after line 6
C) Just after line 7 (that is, as the method returns)
D) Never in this method.
4. Which two construct an OutputSream that appends to the file "file.txt"? (Choose Two)
A) OutputStream out=new FileOutputStream(new File("file.txt")true);
B) FileOutputStream out=new FileOutputStream(new file("file.txt"));
C) OutputStream out=new FileOutputStream("file.txt");
D) OutputStream out=new FileOutputStream("file.txt", "append");
E) FileOutputStream out=new FileOutputStream("file.txt", true);
5. Exhibit:
1 . class super (
2 . public int I = 0;
3 .
4 . public super (string text) (
5 . I = 1
6 .)
7 .)
8 .
9 . public class sub extends super (
1 0. public sub (string text) (
1 1. i= 2
1 2. )
1 3.
1 4. public static void main (straing args[]) (
1 5. sub sub = new sub ("Hello");
1 6. system.out. PrintIn(sub.i);
1 7.)
1 8. )
What is the result?
A) Compilation will fail.
B) Compilation will succeed and the program will print "1"
C) Compilation will succeed and the program will print "2"
D) Compilation will succeed and the program will print "0"
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C,E | Question # 3 Answer: D | Question # 4 Answer: A,E | Question # 5 Answer: A |
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