Encapsulation in Java

Encapsulation in Java — a practical guide to Java encapsulation with clear examples you can reuse in real projects.

Java Tutorial Series (37/90). Prefer one article? Read the complete Java tutorial.

Short description

Keep fields private and validate changes through methods.

Encapsulated class

class Account {
    private double balance;
    public double getBalance() { return balance; }
    public void deposit(double amount) {
        if (amount > 0) balance += amount;
    }
}