accpexception2.java

关于java面向对象系统分析方面的课件

/*
 * s2jsp.sg.ch05.AccpException2.java
 * 2007-5-31
 * 5u^j2JavaJava
 */
package s2Java.sg.ch04;

import java.util.Scanner;
import java.util.InputMismatchException;;
public class AccpException2 {
	public static void main(String[] args) {
		System.out.print("请输入课程代号(1至3之间的数字):");
		Scanner in = new Scanner(System.in);
		try {
			int courseCode = in.nextInt();
			switch (courseCode) {
			case 1:
				System.out.println("C#编程");
				break;
			case 2:
				System.out.println("Java编程");
				break;
			case 3:
				System.out.println("SQL基础");
			}
		} catch (NullPointerException ex) {
			System.out.println("输入不为数字!");
		}
		System.out.println("欢迎提出建议!");
	}
}