The alphabetize method sorts an array list of strings using a selection sort approach, comparing elements with compareTo and swapping with a temporary variable.

Define a private static void print method that takes string array or list, iterate with a for-each loop, format each line with a space and colon, and print with System.out.println.

Learn to capture user input with a scanner, parse dash commands like -r, -h, and -a, toggle options with booleans, and display a helpful command list.

Create an Eclipse project called file io and a class file reverser, learning to reverse a text file from a repository and import or paste source text.

Learn to read a text file in Java with a buffered reader, reverse content using a reverse method, and write the result to a new file using a print writer.

This lecture demonstrates using byte streams for file I/O by reading bytes with a file input stream and writing to a file output stream, using a while loop and flush.

Learn to implement a hash map in Java to index authors by last name, store their works as a value list, and print results using the map interface and generics.

Explore how enumerations work with vectors by modeling a train and its cars, building the train, iterating to add cars, and printing the result.

Develop a Java generic sorting method by defining a Comparable type, implementing a swap sort with nested loops, and printing array results with Arrays.toString for numbers and characters.

Learn why recursion can replace for loops by breaking a problem into parts, computing them separately, and summing the results, with Fibonacci as a contrasting example.

Create two threads using the Runnable interface and implement the run method to illustrate concurrency. Use sleep and print statements to show asynchronous execution and thread progress.

Create two threads, apply join to wait for the first to finish before the second, producing a concise, predictable output.

Verify the java version on windows and configure the PATH to include the JDK bin via environment variables. This enables running java commands from the command prompt.

Set up a Java networking project, add a JSON library, and implement a method to download a file and parse it into a JSON object using input streams.