“面向对象编程中的关键语法差异：Python 与 Java”

<code class="python"># 定义名为student的类
class student:
    name = "momo"

# 创建student类的对象s1
s1 = student()
print(s1.name)</code>

<code class="python">class student:
    def __init__(self, fullname):  # 构造函数
        self.name = fullname

s1 = student("momo")
print(s1.name)</code>

<code class="java">// 定义名为student的类
class student {
    String name = "momo";
}

// 主类，用于测试student类
public class main {
    public static void main(String[] args) {
        // 创建student类的对象s1
        student s1 = new student();
        System.out.println(s1.name);
    }
}</code>

<code class="java">// Student类
class Student {
    String name; // 实例变量

    // 构造函数
    public Student(String fullname) {
        this.name = fullname;
    }
}

// 主类，用于测试Student类
public class Main1 {
    public static void main(String[] args) {
        // 创建Student类的对象s1
        Student s1 = new Student("Momo");
        // 打印name
        System.out.println(s1.name);
    }
}</code>