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目录

Java class Keyword

❮ Java Keywords

Example

Create a class named "Main":

public class Main {
  public static void main(String[] args) {
    System.out.println("Hello World");
  }
}

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Definition and Usage

The class keyword is used to create a class.

Every line of code that runs in Java must be inside a class. A class should always start with an uppercase first letter, and the name of the java file must match the class name.

A class is like an object constructor. See the example below to see how we can use it to create an object.

More Examples

Example

Create an object of Main called "myObj" and print the value of x:

public class Main {
  int x = 5;

  public static void main(String[] args) {
    Main myObj = new Main();
    System.out.println(myObj.x);
  }
}

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Related Pages

Read more about classes and objects in our Java Classes/Objects Tutorial.

❮ Java Keywords