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Oracle 1Z0-501 Exam Syllabus Topics:

Oracle Java Certified Programmer Sample Questions:

1. CORRECT TEXT
Given:
8 . int index = 1;
9 . String [] test = new String[3];
1 0. String foo = test[index];
What is the result?
E.Foo has the value ""
B.Foo has the value null
C.An exception is thrown
D.The code will not compile

2. Which method is an appropriate way to determine the cosine of 42 degrees?

A) Double d = Math.cos(42);
B) Double d = Math.cos(Math.toRadians(42));
C) Double d = Math.cosine(42);
D) Double d = Math.cos(Math.toDegrees(42));
E) Double d = Math.cosine(Math.toRadians(42));

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

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) The code runs and sets the length of the file to 0.
C) The code does not compile.
D) An exception is thrown because the file is not closed.
E) The code runs and deletes the file from the file system.

5. Which two are equivalent? (Choose Two)

A) 16>>>2
B) 16>4
C) 16*4
D) 16/2^2
E) 16>>2
F) 16/2

Solutions: