Towson University COSC 236

1. Towson UniversityCOSC 236 Lab 1: Java Basics Lab document created by Kyung Eun Park

2. Introduction to DrJava • DrJava is a programming environment for Java for beginners. • For more detailed and technical user documentation, see the User Documentation: http://www.drjava.org

3. Using DrJava • After installing, run DrJavaunder computer science/pgmsfolder • Opening and Creating Files • To create a new file, choose “File, New” from the File menu • To open a file, choose “File, Open” from the File menu • Saving Files • To save a file, either click on the “Save” button or choose “File, Save.”

4. Saving Files

5. Compiling Files • To compile all open files, click on the “Compile” button. • Once the compile is completed, the results are displayed on the Compiler Output tab at the bottom of the screen.

6. Direction for Lab Assignments • Submit your .java file before next Lab (11:00 a.m. February 4th) electronically on the BlackBoard. • Make sure that your program contains your name, course, and section number as well as a brief description of the lab as a comment. • The following slides include lab assignments for this week. Please write a complete Java program, compile, and run the program. • The individual assignments can be combined into one program or you can submit them as a zip file.

7. Assignment 1 • Write a complete Java program that prints the following output: ///////////////////////// || Vicotory is mine! || \\\\\\\\\\\\\\\\\\\\\\\\\

8. Assignment 2 • Write a complete Java program that prints the following output: --------------- / ^ ^ \ (| @ |) \ \___/ / ---------------

9. Assignment 3 • Write a complete Java program that prints the following output: A well-formed Java program has a main method with { and } braces. A System.out.println statement has ( and ) and usually a String that starts and ends with a “ character. (But we type \” instead!)

10. Assignment 4 • Write a complete Java program that prints the following output: A ”quoted” String is ’much’ better if you learn the rules of ”escape sequence.” Also, ”” represents an empty String. Don’t forget: use \” (\’) instead of ” (’) ! ’’ is not the same as ”.

11. Assignment 5 • Write a complete Java program that prints the following output: There’s one thing every coder must understand: The System.out.println command. There’s one thing every coder must understand: The System.out.println command.