34 lines
1.1 KiB
Java
34 lines
1.1 KiB
Java
package chapter6;
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// T 标识一个不确定的类型
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class Score<T> {
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private String studentName; // 学生姓名
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private String subject; // 课程名称
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private T value; // 成绩值（可以是任意类型）
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// 构造方法
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public Score(String studentName, String subject, T value) {
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this.studentName = studentName;
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this.subject = subject;
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this.value = value;
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}
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public String toString() {
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return studentName + "的" + subject + "成绩是" + value;
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}
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}
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public class Example22 {
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public static void main(String[] args) {
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// 创建三个成绩对象，分别存储小明的数学、英语、军事理论成绩
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Score<Integer> s1 = new Score<Integer>("小明", "数学", 100);
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Score<String> s2 = new Score<String>("小明", "英语", "A");
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Score<String> s3 = new Score<String>("小明", "军事理论", "合格");
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// 打印三门课程的成绩
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System.out.println(s1);
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System.out.println(s2);
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System.out.println(s3);
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}
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}
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