Java Default Parameters?

No, Java doesn't directly support default parameter values like Python or JavaScript. However, you can achieve similar functionality using method overloading or optional arguments via wrapper classes.

Method Overloading:

Define multiple methods with the same name but different parameter lists.

public class MyClass {
    public void myMethod(int x, int y) {
        // ...
    }

    public void myMethod(int x) {
        myMethod(x, 10); // Default y = 10
    }
}

Optional Arguments (Wrapper Class):

Create a wrapper class containing optional parameters.

public class MyParams {
    public int x;
    public int y;

    public MyParams(int x) {
        this(x, 10);
    }

    public MyParams(int x, int y) {
        this.x = x;
        this.y = y;
    }
}

public class MyClass {
    public void myMethod(MyParams params) {
        // ... use params.x and params.y
    }
}

Spring Boot (Optional Arguments):

Spring supports this well via its dependency injection mechanism using @Value or constructor injection with optional parameters.

@Component
public class MyClass {
    private final int y;

    public MyClass(@Value("${my.param:10}") int y) { // Default 10 if not set
        this.y = y;
    }
    //...
}

Choose the approach best suited to your needs. Overloading is simpler for few optional parameters, while wrapper classes provide better structure for multiple options. Spring Boot offers a concise way to manage defaults at configuration time. Remember to handle null values appropriately.