How to call classes in java

Calling class methods in Java: 1. Create an instance of the class; 2. Use the dot operator of the instance method; 3. Call the static method directly; 4. Pass the necessary parameters.

Methods called by classes in Java

Calling methods of classes in Java is very simple, just follow the following Steps:

1. Create an instance of the class: Use the new keyword to create an instance of the class, for example:

<code class="java">Person person = new Person();</code>

2. Calling instance methods: Use the dot operator (.`) to call instance methods of a class, for example:

<code class="java">person.setName("John Doe");</code>

3. Calling static methods: If the method is declared static, you can call it directly using the class name, for example:

<code class="java">Person.printStaticMessage();</code>

4. Pass parameters: If the method requires parameters, you can put them in parentheses Pass them, for example:

<code class="java">person.greet("Hello!");</code>

Example:

Here is an example showing how to call the class:

<code class="java">class Person {
    private String name;

    public void setName(String name) {
        this.name = name;
    }

    public void greet(String message) {
        System.out.println(message + ", " + name + "!");
    }

    public static void printStaticMessage() {
        System.out.println("This is a static message.");
    }
}

public class Main {
    public static void main(String[] args) {
        Person person = new Person();
        person.setName("John Doe");
        person.greet("Hello");
        Person.printStaticMessage();
    }
}</code>

Output:

<code>Hello, John Doe!
This is a static message.</code>

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