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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

1. What is the numerical range of a char?

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

2. Given:
1. class BaseClass {
2. Private float x = 1.0f ;
3. protected float getVar ( ) ( return x;)
4. }
5 . class Subclass extends BaseClass (
6 .private float x = 2.0f;
7 .//insert code here
8 . )
Which two are valid examples of method overriding? (Choose Two)

A) Public float getVar (float f ) { return f;}
B) Float getVar ( ) { return x;}
C) Public float getVar ( ) { return x;}
D) Public float getVar ( ) { return x;}
E) Float double getVar ( ) { return x;}

3. Which determines if "prefs" is a directory and exists on the file system?

A) Boolean exists=Directory.exists ("prefs");
B) Boolean exists=true;
Try{
Directory d = new Directory("prefs");
}
catch (FileNotFoundException e) {
exists = false;
}
C) Boolean exists=(new File("prefs")).isDir();
D) Boolean exists=(new File("prefs")).isDirectory();
E) Boolean exists=(new Directory("prefs")).exists();

4. Which is a valid identifier?

A) a-class
B) _object
C) false
D) default

5. Given:
1 . public class returnIt (
2 . returnType methodA(byte x, double y) (
3 . return (short) x/y * 2;
4 .)
5 . )
What is the valid returnType for methodA in line 2?

A) Long
B) Byte
C) Double
D) Float
E) Int
F) Short

Solutions: