How to pass an object parameter in Java?

In Java, objects can be passed as arguments to methods or functions to pass object parameters. Here are several methods for passing object parameters.

1. Passing an object as a method parameter: You can define a method in which an object parameter is accepted, and then pass the object as a parameter when calling the method. For example:

public class MyClass {
    public void myMethod(MyObject obj) {
        // 执行操作
    }

    public static void main(String[] args) {
        MyObject obj = new MyObject();
        MyClass myClass = new MyClass();
        myClass.myMethod(obj);
    }
}

1. Passing an object as a constructor parameter: You can pass another object as a parameter to the constructor when creating an object. For example:

public class MyClass {
    private MyObject obj;

    public MyClass(MyObject obj) {
        this.obj = obj;
    }

    // 其他方法
}

public class MyObject {
    // 成员变量和方法
}

public static void main(String[] args) {
    MyObject obj = new MyObject();
    MyClass myClass = new MyClass(obj);
}

1. One way to use method calls that return objects is by creating a new object within a method, returning it, and then passing the returned object as a parameter to another method. For example:

public class MyClass {
    public MyObject createObject() {
        MyObject obj = new MyObject();
        // 执行其他操作
        return obj;
    }

    public void myMethod(MyObject obj) {
        // 执行操作
    }

    public static void main(String[] args) {
        MyClass myClass = new MyClass();
        MyObject obj = myClass.createObject();
        myClass.myMethod(obj);
    }
}

There are several common methods for passing object parameters, the specific usage depends on your needs and design.