Sometimes you will need to have more complex conditions to determine what you need. This goes beyond having Boolean logic, but moves into finding a value in a series of values. This is where we might use a if else if series of code blocks, or a switch statement. If Else If Do you have…
While we didn’t look at creating a Set, we could have with several of the data structures we built – such as the binary tree if we didn’t allow duplicate data, or by searching our linked list before adding the element. It turns out that Java doesn’t provide a single Set type, but actually multiple…
Along with other Java collections, there is a Linked List. You will want to use a parameterized constructor to work easier with Java Linked List. As a linked list, it has container elements which will store the data and allow you to navigate through it. We saw many of the methods used for a Linked…
The Stack class is found in java.util and it extends the Vector Class. This means it can grow and shrink as needed, which is helpful for a Stack. As it extends a Vector, it is helpful to Parameterize the constructor. Just like the Stack that we’ve created, it has the same methods: push(), pop(), and…
The Vector, in Java, effectively implements a dynamic array like in other languages. This is because Java’s array is static in size, like the one’s found in C/C++. The vector can use an index to identify a specific element, however, it can grow and shrink based upon the size needs of the vector. Since early…
Most modern languages support many of the data types we’ve looked at so far this term, including Stacks, Queues, Hash Maps/Dictionaries, and more. Many of these are supported within the language itself, often through a utility package, or something similar which can be imported, or from a third party library that can be imported. Which…
In order to understand network programming in Java, you need to understand couple of concepts first. The first of which, is what form of network connection are you going to be making. Typically, many modern apps use a client server model, and you make a request from a URL Process where a client uses a…
If you need to create a Thread in Java, and cannot extend the Thread class, often because you are extending another class, you can always implement Runnable. Notice, that just like where you extend the Thread class, you have to override the abstract method run. However, in this example, you need to create a Thread…
