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How to let users supply numeric input to your programs.

Using the Scanner Class and JOptionPane class.

Working with parallel arrays in java.

Arrays are reference variables, which means simple assignment doesn't make a copy of the values.

What You'll Learn: This problem includes * Arrays * Loops (FOR, WHILE) * Decisions (IF) * User Input, and more! I created a ...

Use a *while* loop to repeatedly get input in a program.

A while loop lets your programs repeatedly ask for user input until they enter a “sentinel value” to tell you they have finished.

The video shows how to use Java to input an integer in using a loop that keeps asking for a valid input if the user inputs a negative ...

Arrays can be accessed via pointers, and that is the preferred way to iterate through an array in C.

In Java, you can have a two-dimensional array where each row has a different number of elements. This is called a ragged array.

ArrayLists let you store an arbitrary number of items, unlike Arrays, which have a fixed length. Here are some of the most-used ...

Using if, if else, and while statements in Java.

Handling a two-dimensional arrays that represent a matrix of rows and columns.

In a preceding video, we had duplicated code to read the user input outside the loop and inside the loop. To avoid duplicated ...

What's going on behind the scenes when you call a method in Java?

Learn how to declare, initialize, and iterate through arrays.

How to pass arrays to methods and return arrays as results.

Open a text file using the Java Scanner. Read and display the contents of the file either line by line or by individual fields on each ...

Here are two approaches to solving the problem. (I'm not entirely happy with this video; the script just didn't seem to “click” for me, ...

Some versions of C let you declare an array using a variable to give the number of elements in the array. (Sorry about the ...