Java Array

學校中的一篇日誌..
主要將一個原來用 switch 的檢查月份日數的東西改為了 array 方法..
Java 和 VB.NET 的寫法有點類似 = = ..?

Array 的方法 :

import javax.swing.JOptionPane;

public class test {
	public static void main(String args[]) {

		String m = JOptionPane.showInputDialog(null, "Enter a month");
		String ys = "";

		String[] m_s = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
		int[] m_d = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

		if (m.equals("2")) {
			int y = Integer.parseInt(JOptionPane.showInputDialog(null, "Enter a year"));
			 ys =  " and year " + y;

			if ( (y % 4 == 0 && y % 100 != 0) || (y % 400 == 0) ) m_d[1] = 29;
		}

		int t = Integer.parseInt(m) - 1;

		JOptionPane.showMessageDialog(null, "The number of days on month " + m_s[t] + ys + " is " + m_d[t]);
		System.exit(0);
	}
}

原來的 Switch 方法 :

import javax.swing.JOptionPane;

public class a3 {
	public static void main(String args[]) {

		String m = JOptionPane.showInputDialog(null, "Enter a month");
		String tmp = "28";
		String shortName, ys = "";

		if (m.equals("2")) {
			int y = Integer.parseInt(JOptionPane.showInputDialog(null, "Enter a year"));
			 ys =  " and year " + y;

			if ( (y % 4 == 0 && y % 100 != 0) || (y % 400 == 0) ) tmp = "29";
		}

		switch(Integer.parseInt(m)) {
			case 1: shortName = "Jan"; tmp = "31"; break;
			case 2: shortName = "Feb"; break;
			case 3: shortName = "Mar"; tmp = "31"; break;
			case 4: shortName = "Apr"; tmp = "30"; break;
			case 5: shortName = "May"; tmp = "31"; break;
			case 6: shortName = "Jun"; tmp = "30"; break;
			case 7: shortName = "Jul"; tmp = "31"; break;
			case 8: shortName = "Aug"; tmp = "31"; break;
			case 9: shortName = "Sep";  tmp = "30"; break;
			case 10: shortName = "Oct"; tmp = "31"; break;
			case 11: shortName = "Nov"; tmp = "30"; break;
			default: shortName = "Dec"; tmp = "31"; break;
		}

		JOptionPane.showMessageDialog(null, "The number of days on month " + shortName + ys + " is " + tmp);
		System.exit(1);
	}
}