Our First Program.

                 public class Welcome {
                    public static void main( String [] args ) {
 		            System.out.println("Welcome to CSC211");
 		            System.out.print("Good ");
 		            System.out.print("Luck and ....\n");
 		            System.out.println("Have a great quarter");
 	                } // end main
                 }// end Welcome class


 

Getting the program to run.

• Install Java 2 SDK version 1.4.   Get it here
  (If you already have java installed skip this)
  Make sure you click on the column that is titled SDK.
• Create a directory(folder) on your C drive named csc211.
• Using an editor (notepad or TextPad) enter in the source code.
• Save as Welcome.java in directory csc211
• When saving a java class, the file name must always be the same as the public class.
• Go to the command prompt:
  • Click the start button
  • Select run
  • Enter cmd or command (depending on your OS) in the combo box labeled open.
• Navigate to the directory csc211.
• Some DOS commands

          cd ..  takes you back one directory.
          cd \  takes you to the root.
          cd csc211  changes to directory csc211
          dir /p  displays the names of sub directories / files in the current directory.
    

• Once you are in directory csc211 type:

    javac Welcome.java 
    

  javac is the name of the compiler. If all goes well, you should see a file named Welcome.class ( type dir /p ). This is called the bytecode file.

  If this does not compile, check your syntax. If the syntax is ok and you see a message similar to

             bad command  or javac is not  recognized
    

  You will have to set your path variable.
• If you do not know how to set your path follow this link read section 4

• To run, send the bytecode file to the java interpreter. At the command prompt enter..

     java Welcome