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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

1. Exhibit:
1 . class super {
2 .public int getLength(){return 4;}
3 .}
4 .
5 . public class Sub extends Super {
6 .public long getLength() {return 5;}
7 .
8 . public static void main (String[]args){
9 .super sooper = new Super ();
1 0. Sub sub = new Sub();
1 1. System.out.printIn(
1 2.sooper.getLength()+ "," + sub.getLength()};
1 3.}
1 4. }
What is the output?

A) 4, 4
B) 5, 5
C) 5, 4
D) The code will not compile.
E) 4, 5

2. What writes the text "<end>" to the end of the file "file.txt"?

A) OutputStream out= new FileOutputStream ("file.txt");
Out.writeBytes ("<end>/n");
B) OutputStream os= new OutputStream ("file.txt", true);
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
C) OutputStream os= new FileOutputStream ("file.txt");
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
D) OutputStream os= new FileOutputStream ("file.txt", true);
DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");

3. Which two CANNOT directly cause a thread to stop executing? (Choose Two)

A) Calling the notifyAll method on an object.
B) Calling the start method on another Thread object.
C) Calling the notify method on an object.
D) Calling the yield method.
E) Calling the wait method on an object.

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

5. Given:
1 . public class ArrayTest {
2 . public static void main (String[]args){
3 . float f1[], f2[];
4 . f1 = new float [10];
5 . f2 = f1;
6 . System.out.printIn ("f2[0]=" + f2[0]);
7 .}
8 .}
What is the result?

A) An error at line 6 causes compile to fail.
B) An error at line 6 causes an exception at runtime.
C) It prints f2[0] = 0.0
D) An error at line 5 causes compile to fail.
E) It prints f2[0] = NaN

Solutions: