// 定义Student类 class Student { // 定义属性 int studentId; String name; double score; // 定义study方法 void study() { System.out.println("学生" + name + "(学号:" + studentId + ")正在学习,当前成绩为:" + score); } } // 主类 public class StudentTest { public static void main(String[] args) { // 实例化第一个Student对象 Student student1 = new Student(); student1.studentId = 101; student1.name = "张三"; student1.score = 92.5; student1.study(); // 调用study方法 // 实例化第二个Student对象 Student student2 = new Student(); student2.studentId = 102; student2.name = "李四"; student2.score = 88.0; student2.study(); // 调用study方法 } }