310-025 Sun - Braindumps.com.ua: question list for "Sun Certified Java Programmer", page: 3

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Sun 310-025: Sun Certified Java Programmer

#21. 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?

#22. Given the ActionEvent, which method allows you to identify the affected component?

#23. Which is a method of the MouseMotionListener interface?

#24. Exhibit:

 1. import java.awt*; 
 2. 
 3. public class X extends Frame ( 
 4. public static void main(string []args) ( 
 5. X x = new X (); 
 6. X.pack(); 
 7. x.setVisible(true); 
 8. ) 
 9. 
 10. public X () ( 
 11. setlayout (new GridLayout (2,2)); 
 12. 
 13. Panel p1 = new panel(); 
 14. Add(p1); 
 15. Button b1= new Button (“One”); 
 16. P1.add(b1); 
 17. 
 18. Panel p2 = new panel(); 
 19. Add(p2); 
 20. Button b2= new Button (“Two”); 
 21. P2.add(b2); 
 22. 
 23. Button b3= new Button (“Three”); 
 24. add(b3); 
 25. 
 26. Button b4= new Button (“Four”); 
 27. add(b4); 
 28. ) 
 29. )

Which two statements are true? (Choose Two)

#25. You are assigned the task of building a panel containing a TextArea at the top, a label directly below it, and a button directly below the label. If the three components are added directly to the panel. Which layout manager can the panel use to ensure that the TextArea absorbs all of the free vertical space when the panel is resized?

#26. Which gets the name of the parent directory file “file.txt ”?

#27. Which can be used to encode charS for output?

#28. The file “file.txt” exists on the file system and contsins ASCII text.
Given:

 38. try { 
 39. File f = new File(“file.txt”); 
 40. OutputStream out = new FileOutputStream(f, true); 
 41. } 
 42. catch (IOException) {}

What is the result?

#29. Which constructs a DataOutputStream?

#30. What writes the text “<end>” to the end of the file “file.txt”?

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gen. 0.131

Server date 06:37 10-01-2009

Sun 310-025

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