How to Write Less Java Code and Do More (Effective Java Hacks)

Learn how to write less Java code and do more with effective Java hacks. Discover modern tricks like records, var, switch expressions, and Streams to make your Java coding clean and fast.

🧾 Introduction

Java is a powerful language — but sometimes it feels too verbose.
You write many lines just to perform simple things.

The good news?
Modern Java (Java 8–21) gives you powerful features to write less code and do more, without losing readability or power.

In this guide, you’ll learn simple and effective Java hacks to:

✅ Reduce boilerplate
✅ Make your code cleaner
✅ Boost your productivity instantly

✅ 1. Use record Instead of Full POJO Classes (Java 16+)

Before: (Old way)

public class User {
    private final String name;
    private final int age;

    public User(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String name() { return name; }
    public int age() { return age; }
}

After: (Modern way)

public record User(String name, int age) {}