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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

Question 1

Given:
1 . public class ConstOver {
2 . public ConstOver (int x, int y, int z){
3 .}
4 . }
Which two overload the ConstOver constructor? (Choose Two)

A. Private ConstOver (int z, int y, byte x) { }
B. ConstOver ( ) { }
C. Protected int ConstOver ( ) { }
D. Public Object ConstOver (int x, int y, int z) { }
E. Public void ConstOver (byte x, byte y, byte z) { }

Question 2

Given:
1 . public class Test {
2 . public static void main (String args[]) {
3 .class Foo {
4 .public int i = 3;
5 .}
6 .Object o = (Object) new Foo();
7 .Foo foo = (Foo)o;
8 .System.out.printIn(foo. i);
9 .}
1 0. }
What is the result?

A. Compilation will succeed but the program will throw a ClassCastException at line 6.
B. Compilation will succeed and the program will print "3"
C. Compilation will fail.
D. Compilation will succeed but the program will throw a ClassCastException at line 7.

Question 3

Which can be used to encode charS for output?

A. Java.io.BufferedOutputStream.
B. Java.io.OutputStream.
C. Java.io.EncodeOutputStream.
D. Java.io.OutputStreamWriter.
E. Java.io.EncodeWriter.

Question 4

The file "file.txt" exists on the file system and contsins ASCII text.
Given:
3 8. try {
3 9. File f = new File("file.txt");
4 0. OutputStream out = new FileOutputStream(f, true);
4 1. }
4 2. catch (IOException){}
What is the result?

A. The code runs and no change is made to the file.
B. An exception is thrown because the file is not closed.
C. The code does not compile.
D. The code runs and deletes the file from the file system.
E. The code runs and sets the length of the file to 0.

Question 5

Which two declarations prevent the overriding of a method? (Choose Two)

A. Static final void methoda() {}
B. Final abstract void methoda() {}
C. Final void methoda() {}
D. Static void methoda() {}
E. Void final methoda() {}

Solutions: