To create a class, we use the keyword class. You can also think of a class as a blueprint from which you can create an individual object. What is a Class in Java?Ī class is defined as a collection of objects. For example, you can change args to myStringArgs. Software objects are often used to model the real-world objects that you find in everyday life. The only thing that can be changed is the name of the string array argument. An object is a software bundle of related state and behavior. Its syntax is always public static void main(String args). This method is required in every Java program, and it is the most important one because it is the entry point of any Java program. Let's first look at the main() method: public static void main(String args). For example, the variable “m圜lass ” and the variable “myclass ” are two totally different things.Īlright, let's see what that code's doing: This means that Java has the ability to distinguish between upper and lower case letters. You may also note that Java is case-sensitive. We are going to discuss, step by step, each line of code just below.įor now, I want you to start by noting that every line of code that runs in Java must be in a class. My name is Patrick Cyubahiro.") ĭon't worry if you don't understand the above code at the moment. After creating and saving the file, we are going to use the below lines of code to get the expected output. We are going to start by creating our first Java file called Main.java, which can be done in any text editor. Let's write a Java program that prints the message “Hello freeCodeCamp community. When saving a file, save it using the class name and add “.java ” to the end of the file name. In Java, every application starts with a class name, and this class must match the file name.
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