Essentials of the Java Programming Language (Part II)

1. Select the answer that best describes the purpose of the following catch block:

try {
   // Write to file
   // Read from file
} catch (java.lang.IOException e) {
  // Do something if . . .
}

2. Two methods from the exception and error classes are useful for debugging an application during development. One of the methods is called a printStackTrace(). Another useful method for understanding errors is toString. Select the best description for the following block of code.

} catch(java.io.IOException e) {
  System.out.println(e.toString());
}
  

3. The Java 2 platform security imposes restrictions on applets without explicit permissions to do the following:

4. In order to determine what permissions an applet's policy file needs to access a database, read the error messages from the:

5. In Lesson 7, the database application prevents outside classes from accessing the database driver, the user name, and the password by declaring these variables as:

6. To run the RMI application in Lesson 8, you must first start:

7. What does a multithreaded server do?

8. The synchronized keyword is used to:

9. The actionPerformed method in a user interface handles action events such as:

10. The List interface implementation permits duplicate elements in a collection object.