Directory d = new Directory(“prefs”); }
catch (FileNotFoundException e) { exists = false; }
Answer: D
QUESTION NO: 82
Which two create an InputStream and open file the “file.txt” for reading? (Choose Two) A. InputStream in=new FileReader(“file.txt”);
B. InputStream in=new FileInputStream(“file.txt”);
C. InputStream in=new InputStreamFileReader (“file.txt”, “read”); D. FileInputStream in=new FileReader(new File(“file.txt”)); E. FileInputStream in=new FileInputStream(new File(“file.txt”)); Answer: B, E
QUESTION NO 83
Which two construct an OutputSream that appends to the file “file.txt”? (Choose Two) A. OutputStream out=new FileOutputStream(“file.txt”);
B. OutputStream out=new FileOutputStream(“file.txt”, “append”); C. FileOutputStream out=new FileOutputStream(“file.txt”, true); D. FileOutputStream out=new FileOutputStream(new file(“file.txt”)); E. OutputStream out=new FileOutputStream(new File(“file.txt”)true); Answer: C, E
QUESTION NO: 84
Which constructs a BufferedIputStream? A. New BufferedInputStream(“in.txt”);
B. New BufferedInputStream(new File(“in.txt”)); C. New BufferedInputStream(new Writer(“in.txt”)); D. New BufferedInputStream(new Writer(“in.txt”));
E. New BufferedInputStream(new InputStream(“in.txt”)); F. New BufferedInputStream(new FileInputStream(“in.txt”)); Answer: F
QUESTION NO: 85
Which is a valid identifier? A. false B. default C. _object D. a-class Answer: C
QUESTION NO: 86 Exhibit:
1. package foo; 2.
3. import java.util.Vector;
4.
5. private class MyVector extends Vector { 6. int i = 1;
7. public MyVector() { 8. i = 2; 9. } 10. } 11.
12. public class MyNewVector extends MyVector { 13. public MyNewVector () { 14. i = 4; 15. }
16. public static void main (String args []) { 17. MyVector v = new MyNewVector(); 18. } 19. }
The file MyNewVector.java is shown in the exhibit. What is the result?
A. Compilation will succeed. B. Compilation will fail at line 5. C. Compilation will fail at line 6. D. Compilation will fail at line 14. E. Compilation will fail at line 17. Answer: B
QUESTION NO: 87 Given:
1. public class Test {
2. public static void main (String[]args) { 3. String foo = args[1]; 4. String bar = args[2]; 5. String baz = args[3];
6. System.out.printIn(“baz = ” + baz); 7. } 8. }
And the output: Baz = 2
Which command line invocation will produce the output? A. Java Test 2222 B. Java Test 1 2 3 4 C. Java Test 4 2 4 2 D. Java Test 4 3 2 1 Answer: C
QUESTION NO: 88
Given:
8. int index = 1;
9. String [] test = new String[3]; 10. 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 Answer: B
QUESTION NO: 89 Given:
1. public interface Foo{ 2. int k = 4; 3. }
Which three are equivalent to line 2? (Choose Three) A. Final int k = 4; B. Public int k = 4; C. Static int k = 4; D. Private int k = 4; E. Abstract int k = 4; F. Volatile int k = 4; G. Transient int k = 4; H. Protected int k = 4; Answer: A, B, C QUESTION NO: 90 Given: 310-025
Leading the way in IT testing and certification tools, www.testking.com - 48 -
1. public class foo { 2. static String s;
3. public static void main (String[]args) { 4. system.out.printIn (“s=” + s); 5. } 6. }
What is the result?
A. The code compiles and “s=” is printed. B. The code compiles and “s=null” is printed.
C. The code does not compile because string s is not initialized. D. The code does not compile because string s cannot be referenced.
E. The code compiles, but a NullPointerException is thrown when toString is called. Answer: B
QUESTION NO: 91
Which two valid declarations of a char? (Choose Two) A. Char ch = “a”; B. Char ch = ?\\' ?; C. Char ch = ?cafe'; D. Char ch = “cafe”; E. Char ch = ?\?'; F. Char ch = ?\?0'; G. Char ch = (char) true; Answer: B, E 310-025
Leading the way in IT testing and certification tools, QUESTION NO: 92 Given:
1. String foo = “blue”;
2. Boolean[]bar = new Boolean [1]; 3. if (bar[0]) { 4. foo = “green”; 5. }
What is the result?
A. Foo has the value of “” B. Foo has the value of null. C. Foo has the value of “blue” D. Foo has the value of “green” E. An exception is thrown. F. The code will not compile. Answer: F
QUESTION NO: 93 Exhibit:
1. public class X {
2. public static void main (String[]args) { 3. String s1 = new String (“true”); 4. Boolean b1 = new Boolean (true); 5. if (s2.equals(b1)) {
6. System.out.printIn(“Equal”); 7. } 8. } 9. }
What is the result?
A. The program runs and prints nothing. B. The program runs and prints “Equal”
C. An error at line 5 causes compilation to fail. D. The program runs but aborts with an exception. Answer: A
QUESTION NO: 94
Given:
1. public class Foo {
2. public static void main (String []args) { 3. int i = 1; 4. int j = i++;
5. if ((i>++j) && (i++ ==j)) { 6. i +=j; 7. } 8. } 9. }
What is the final value of i? A. 1 B. 2 C. 3 D. 4 E. 5
Answer: B
QUESTION NO: 95 Exhibit:
1. public class X {
2. public static void main (String[]args) { 3. string s = new string (“Hello”); 4. modify(s);
5. System.out.printIn(s); 6. } 7.
8. public static void modify (String s) { 9. s += “world!”; 10. } 11. }
What is the result?
E. The program runs and prints “Hello” F. An error causes compilation to fail.
G. The program runs and prints “Hello world!” H. The program runs but aborts with an exception. Answer: A
QUESTION NO: 96
Which two are equivalent? (Choose Two) A. 16>4 B. 16/2 C. 16*4 D. 16>>2 E. 16/2^2