j03190801.java

一些java程序

import java.util.*;
public class j03190801
{
 public static void main( String[] para )
 {
  //%[argument_index$][flags][width][.precision]conversion
  System.out.printf( "科目:%s    分数:%d  显示%%\n", "语文", 99 );
                  //%s 代入 "语文"    %d 代入 99

  System.out.printf("%4$s  %3$s  %2$s  %1$s\n",
                   "a", "b", "c", "d");
  //4$ 取 "d"、3$ 取 "c"、2$ 取 "b"、1$ 取 "a"

  System.out.printf("'b'一般=%b  'h'一般=%h   's'一般=%s\n",
                    false, 16, "大家好" );
  System.out.printf("'c'字符=%c  'd'整数=%d  'o'整数=%o  'x'整数=%x\n",
                    '\u0041', 123, 16, 16);
  System.out.printf("\n'e'浮点=%e  'f'浮点=%f %n'g'浮点=%g  'a'浮点=%a\n",
                    123.1234567, 123.1234567, 123.1234567, 123.1234567);
 }
}