如何在构造函数中设置变量，并在以后的程序中使用"getter“方法？(Java)

public class MyClass {
    private String myVariable;

    // 构造函数
    public MyClass(String myVariable) {
        this.myVariable = myVariable;
    }

    // getter方法
    public String getMyVariable() {
        return my.getVariable();
    }
}

public MyClass(String myVariable) {
    this.myVariable = myVariable;
}

public String getMyVariable() {
    return this.myVariable;
}

public class MyClass {
    private String myVariable;

    // 构造函数
    public MyClass(String myVariable) {
        this.myVariable = myVariable;
    }

    // getter方法
    public String getMyVariable() {
        return this.myVariable;
    }

    public static void main(String[] args) {
        // 创建对象并设置变量
        MyClass obj = new MyClass("Hello, World!");

        // 使用getter方法获取变量值
        String value = obj.getMyVariable();
        System.out.println(value); // 输出: Hello, World!
    }
}