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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

Question 1

Exhibit:
1 . class A implements runable (
2 . int i;
3 . public void run () (
4 . try (
5 . thread.sleep(5000);
6 . i= 10;
7 .) catch(InterruptedException e) {}
8 .)
9 .)
1 0.
1 1. public class Test {
1 2. public static void main (string args[]) (
1 3. try (
1 4. A a = new A ();
1 5. Thread t = new Thread (a);
1 6. t.start();
1 7.
1 8. int j= a.i;
1 9.
2 0. ) catch (Exception e) {}
2 1. )
2 2. )
Which statement al line 17 will ensure that j=10 at line 19?

A. t.interrupt();
B. t.yield();
C. a.notify();
D. t.notify();
E. t.wait();
F. t.join();
G. a.wait();

Question 2

Which constructs a BufferedIputStream?

A. New BufferedInputStream(new File("in.txt"));
B. New BufferedInputStream("in.txt");
C. New BufferedInputStream(new Writer("in.txt"));
D. New BufferedInputStream(new Writer("in.txt"));
E. New BufferedInputStream(new InputStream("in.txt"));
F. New BufferedInputStream(new FileInputStream("in.txt"));

Question 3

Exhibit:
1 . public class Mycircle {
2 . public double radius;
3 . public double diameter;
4 .
5 . public void setRadius(double radius)
6 . this.radius = radius;
7 . this.diameter= radius * 2;
8 .}
9 .
1 0. public double getRadius(){
1 1. return radius;
1 2.}
1 3. }
Which statement is true?

A. The diameter of a given MyCircle is guaranteed to be twice its radius.
B. The Mycircle class is fully encapsulated.
C. Lines 6 and 7 should be in a synchronized block to ensure encapsulation.
D. The radius of a MyCircle object can be set without affecting its diameter.

Question 4

What is the numerical range of a char?

A. 0 . . . 32767
B. -256 . . . 255
C. 0 . . . 65535
D. -32768 . . . 32767
E. Range is platform dependent.

Question 5

Which two create an instance of an array? (Choose Two)

A. int[] ia = new int [15];
B. Int ia [][] = (4, 5, 6) (1, 2, 3)
C. Object oa = new float[20];
D. char[] ca = "Some String";
E. float fa = new float [20];

Solutions: