Java Program Structure

Java Program Structure — a practical guide to Java program structure with clear examples you can reuse in real projects.

Java Tutorial Series (8/90). Prefer one article? Read the complete Java tutorial.

Short description

A typical Java file has a package declaration, imports, and one public class matching the file name.

Structure sketch

package com.example.demo;

import java.util.List;

public class App {
    public static void main(String[] args) {
        // start here
    }
}