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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

1. Given:
1 . public class WhileFoo {
2 . public static void main (String []args){
3 . int x= 1, y = 6;
4 . while (y--){x--;}
5 . system.out.printIn("x=" + x "y =" + y);
6 .}
7 . }
What is the result?

A) Compilation will fail.
B) The output is x = 7 y = -1
C) The output is x = 6 y = -1
D) The output is x = 6 y = 0
E) The output is x = 7 y = 0

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

A) 2
B) 16
C) The code will not compile.
D) 8
E) 4

3. Which two statements are true? (Choose Two)

A) Even if a class Super does not implement any interfaces, it is still possible to define an anonymous inner class that is an immediate subclass of Super that implements a single interface.
B) An anonymous inner class can be declared inside of a method
C) An anonymous inner class constructor can take arguments in some situation.
D) An anonymous inner class that is a direct subclass that is a direct subclass of Object can implementmultiple interfaces.
E) Event if a class Super does not implement any interfaces, it is still possible to define an anonymous inner class that is an immediate subclass of Super that implements multiple interfaces.

4. Given:
1. byte [] arry1, array2[];
2 . byte array3 [][];
3 . byte[][] array4;
If each array has been initialized, which statement will cause a compiler error?

A) Both B and C
B) Array2 = array3;
C) Both A and C
D) Array2 = array4;
E) Both A and B
F) Array2 = array1;

5. Given:
1 3. public class Foo {
1 4. public static void main (String [] args){
1 5.StringBuffer a = new StringBuffer ("A");
1 6.StringBuffer b = new StringBuffer ("B");
1 7.operate (a,b);
1 8.system.out.printIn{a + "," +b};
1 9. )
2 0. static void operate (StringBuffer x, StringBuffer y){
2 1.y.append {x};
2 2.y = x;
2 3.)
2 4. }
What is the result?

A) The code compiles and prints "AB, B".
B) The code compiles and prints "BA, BA".
C) The code compiles and prints "AB, AB".
D) The code does not compile because "+" cannot be overloaded for stringBuffer.
E) The code compiles and prints "A, BA".
F) The code compiles and prints "A,B".

Solutions: