Scanner scanner=new Scanner(System.in); //创建输入对象 String s=scanner.nextLine(); //获取输入字符串 DateFormat it =new SimpleDateFormat("yyyy-MM-dd"); Date d=it.parse(s); Calendar c= new GregorianCalendar(); c.setTime(d); int day=c.get(Calendar.DAY_OF_MONTH); c.set(Calendar.DAY_OF_MONTH,1); System.out.println("日\t一\t二\t三\t四\t五\t六"); for(int i=0;i<c.get(Calendar.DAY_OF_WEEK)-1;i++) { System.out.print("\t"); } int max=c.getActualMaximum(Calendar.DATE); for(int i=1;i<=c.getActualMaximum(Calendar.DATE);i++) { if(i==day) { System.out.print(i+"*\t"); //在给定日期前加* } else { System.out.print(c.get(Calendar.DAY_OF_MONTH)+"\t"); } if(c.get(Calendar.DAY_OF_WEEK)==Calendar.SATURDAY) { System.out.println(); } c.add(Calendar.DAY_OF_MONTH, 1); }