1. DataInput is   an interface that defines methods to open files.   an interface that defines methods to read primitive data types.   an abstract class defined in java.io.   a class we can use to read primitive data types.   Hint Half-n-half Clue   2. Which of the following statements are true? (A) Unicode characters are all 16 bits. (B) UTF characters are all 24 bits. (C) Reader class has methods that can read integers and floats. (D) File class may be used to rename a file. (E) DataOutputStream objects are used to write primitive data to a file.   (A) & (D)   (A), (C), (D) & (E)   (A), (B) & (D)   (B), (D) & (E)   (A), (D) & (E)   Half-n-half Clue   3. Which exception is thrown by the read() method of InputStream class?   FileNotFoundException   None of these   ReadException   Exception   IOException   Half-n-half Clue   4. Given file is a File object, which of the following are legal statements to create a new file? (A) file.create(); (B) FileOutputStream fos = new FileOutputStream(file); (C) FileWrter out = new FileWriter(file); (D) FileInputStream fis = new FileInputStream(file); (E) RandomAccessFile raf = new RandomAccessFile(file);   (B), (C) & (E)   (A), (B), (D) & (E)   (B), (D) & (E)   (B), (C) & (D)   (B) & (C)   Half-n-half Clue   5. Which of the following methods can be used to change the size of a java.awt.Component object? (A) dimension() (B) setSize() (C) area() (D) size() (E) resize()   (B) & (E)   (A), (B) & (E)   (B), (D) & (E)   (D) & (E)   (A), (B), (C) & (E)   Half-n-half Clue   6. Which of the following methods can be used to remove a java.awt.Component object from the display?   hide()   remove()   delete()   move()   disappear()   Half-n-half Clue   7. What does the following line of code do? Textfield text = new Textfield(10);   Creates text object that can hold 10 columns of text.   Creates text object that can hold 10 rows of text.   Creates the object text and initializes it with the value 10.   The code is illegal.   Half-n-half Clue