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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

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

A) Protected float setVar() {x=3.0f; return 3.0f; }
B) Public void setVar(int f) {x = f;}
C) Public final void setVar(float f) {x = f;}
D) Void setVar(float f) {x = f;}
E) Public void setVar(float f) {x = f;}
F) Public double setVar(float f) {x = f;}

2. Which two create an InputStream and open file the "file.txt" for reading? (Choose Two)

A) FileInputStream in=new FileReader(new File("file.txt"));
B) InputStream in=new FileReader("file.txt");
C) FileInputStream in=new FileInputStream(new File("file.txt"));
D) InputStream in=new FileInputStream("file.txt");
E) InputStream in=new InputStreamFileReader ("file.txt", "read");

3. Given:
1 . switch (i){
2 . default:
3 . System.out.printIn("Hello");
4 . )
What are the two acceptable types for the variable i? (Choose Two)

A) Byte
B) Object
C) Char
D) Double
E) Float

4. CORRECT TEXT
Given:
AnInterface is an interface.
AnAdapter0 is a non-abstract, non-final class with a zero argument constructor.
AnAdapter1 is a non-abstract, non-final class without a zero argument constructor, but with a constructor that takes one int argument.
Which two construct an anonymous inner class? (Choose Two)
F.AnAdapter1 aa=new AnAdapter1(){}
G.AnAdapter0 aa=new AnAdapter0(){}
H.AnAdapter0 aa=new AnAdapter0(5){}
I.AnAdapter1 aa=new AnAdapter1(5){}
J.AnInterface a1=new AnInterface(5){}

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

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

Solutions: