Java 1

1) Write, compile, and test a class that displays the following pattern on the screen:

Save the class as TableAndChairs.java.

2) Write, compile, and test a class that uses the command window to display the following statement about comments:

“Program comments are nonexecuting statements you add to a file for the purpose of documentation.”

Also include the same statement in three different comments in the class; each comment should use one of the three different methods of including comments in a Java class.

Save the class as Comments.java.

3)

1. Write a Java class that declares a named constant to hold the number of quarts in a gallon (4). Also declare a variable to represent the number of quarts needed for a painting job, and assign an appropriate value—for example, 18. Compute and display the number of gallons and quarts needed for the job. Display explanatory text with the values—for example, A job that needs 18 quarts requires 4 gallons plus 2quarts. Save the class as QuartsToGallons.java.

2. Convert the QuartsToGallons class to an interactive application. Instead of assigning a value to the number of quarts, accept the value from the user as input. Save the revised class as QuartsToGallonsInteractive.java