EE-WBC Java Programming Examples - Language Core

• A simple console application - classes, functions, passing parameres
  • Simple Hello World application - static void main
  • Calling another static procedures
  • Calling non-static procedure
  • Calling non-static procedure from another class
  • Calling a static procedure from another class
  • More static vs. non-static experiments
  • Passing variables - by value?, reference?, pointer?
• Data types including arrays, keywords, statements
  • Constructors
  • Class Inheritance
  • Basic data types (a lecture outline)
  • Arrays (a lecture outline)
  • Strings (they are not arrays)
• keywords, statements, getting things done
  • Exceptions - error handling
  • Exceptions in functions - error handling
  • Filtering Exceptions
  • Places to Handle Exceptions
  • Command line parameters
  • Quick fix: how to read a line from keyboard (will revisit when talking about streams and files)
  • Convert strings to...
  • Convert ... to string
• Utility classes
  • Random number generators
  • Date and Calendar
• File IO
  • read bytes from the console
  • read text from the console
  • read a file or a directory
  • fast binary read and write - copy
  • add up FP numbers and calculate their average (sample StringTokenizer)
  • formating a floating point data printout
  • international sample of numerical formats
• Threads, introduction
  • How you do two (or more) independent tasks at once in one program
  • How to start an independent task (1) step by step
  • How to start an independent task (1) without variable references
  • How to start an independent task (2) step by step
  • Start three different tasks at once
  • What to do if the task should not sleep?
  • What happens when you do not yield nor sleep?
  • Passing parametrs to a class that implements runnable
  • Merging runnable with another class
  • Merging runnable with another class and starting a few of them
  • How to stop a thread
  • Synchronization problem - all at once
  • Synchronization solution - one at a time
  • Synchronization solution - applied to function set
  • What other threads are running now?
• Network TCP/IP client side programs
  • Simple socket connection (reading text data only)
  • Simple socket connection (reading binary data only)
  • Get a web page from a web server (both reading and writing)
  • Get a web page from a web server (HTTP/1.1 version)
  • Get the same web page using the higher level library
  • Simple e-mail client (reading and writing interactively)
  • improved e-mail client (exception handling)
  • "professional" grade e-mail sender
  • "professional" grade e-mail checker
  • Scanning all network ports of a machine
    Read this before playing with the example program above
  • Scanning ports using multithreading to speed up the test - with error
  • Scanning ports using multithreading to speed up the test - correct version
• Internet Application Protocols: DAYTIME TIME SMTP (FINGER) HTTP POP3 (IMAP) - class notes
• Network TCP/IP server side programs
  • Simple single client network server at port 4444
  • Quitable single client network server at port 4444
  • Simple Scalable network server at port 4444
  • Quitable Scalable network server at port 4444
  • Quitable Multithreaded network server with some worker threads
  • Simple HTTP echo server at port 88
  • Simple HTTP status server at port 88
• Simple multithreaded HTTP server for embedded systems - the idea of
  • One page with status report
  • Ready for populating with multiple pages
  • Multipage with some crude device control example
  • Multipage with a crude form and its submission
• UDP/IP Sockets
  • UDP receiver - a server
  • UDP Sender
  • UDP responder - an echo server
  • UDP responder - a datetime server
  • UDP client for the UDP datetime server
  • UDP client for the UDP time server
• Multicast sockets, (run them in multiple network locations simultaneously)
  • Multicast receiver
  • Multicast transmiter
• Simple miscelenous examples
  • Execute an external program
  • Look up a class hierarchy

Source code listings were prepared using Code2HTML, courtesy of Peter Palfrader.