1. Which of the following strings can be used as mode strings for creating a RandomAccessFile object? (A) "r" (B) "w" (C) "rw" (D) "wr" (E) "0"   (A), (B), (C) & (E)   (C) & (D)   (A), (B) & (C)   (A) & (C)   (B), (D) & (E)   Hint Half-n-half Clue   2. Which are the valid ways to create DataInputStream streams?   new DataInputStream();   new DataInputStream("in.dat")   new DataInputStream(new File("in.dat"));   new DataInputStream(new FileInputStream("in.dat");   new DataInputStream("in.dat", "r");   Half-n-half Clue   3. 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), (D) & (E)   (A), (B) & (D)   (B), (D) & (E)   Half-n-half Clue   4. Which of the following methods can be used to draw the outline of a square within a java.awt.Component object? (A) fillRect() (B) drawLine() (C) drawRect() (D) drawString() (E) drawPolygon()   (B) & (C)   (C), (D) & (E)   (A), (B), (C) & (E)   (A), (B) & (C)   (B), (C) & (E)   Half-n-half Clue   5. 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)   (B) & (C)   (B), (C) & (D)   (A), (B), (D) & (E)   (B), (D) & (E)   Half-n-half Clue   6. DataInput is   a class we can use to read primitive data types.   an abstract class defined in java.io.   an interface that defines methods to read primitive data types.   an interface that defines methods to open files.   Half-n-half Clue   7. 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()   (A), (B) & (E)   (B) & (E)   (D) & (E)   (B), (D) & (E)   (A), (B), (C) & (E)   Half-n-half Clue