java 每日习题(二) 用decimalFormat格式化输出

import java.text.DecimalFormat;
import java.text.NumberFormat;

/*
 * 输出：
 02 A 04 A 06 A 08 A 10 A;
 12 A 14 A 16 A 18 A 20 A;
 22 A 24 A 26 A 28 A 30 A;
 32 A 34 A 36 A 38 A 40 A;
 42 A 44 A 46 A 48 A 50 A;
 */
public class outputPattern {

    public static void main(String[] args) {
        
        //decimalFormat格式化输出
        DecimalFormat dfnum = (DecimalFormat)NumberFormat.getInstance();
        dfnum.applyPattern("00");
        
        for (int i = 2; i <= 50; i+=2) {

            if (i % 10 != 0) {
                
                System.out.print(dfnum.format(i) + " A ");
                

            } else {
                System.out.print(dfnum.format(i) + " A");
                System.out.println(";");
            }

        }

    }

}