不知道为什么运行错误

Question

package work;


public class two {

	public static void main(String[] args) {
		
		String date = "";
    	int totalDay = 0;
    	long totalMilliseconds = System.currentTimeMillis();
    	totalDay = (int)((totalMilliseconds / 1000 / 60 / 60 + 8) / 24 );
    	
    	int year = 0;
    	int month = 0;
    	int day = 0;
    	for ( year = 1970; totalDay <= 366 ; year++) {
    		if (year % 4 == 0) 
    			totalDay = totalDay - 366;
    		else 
    			totalDay = totalDay - 365;
    	}
    	
    	int[] monthDay = new int[12];
    	monthDay[0] = 31;
    	monthDay[2] = 31;
    	monthDay[3] = 30;
    	monthDay[4] = 31;
    	monthDay[5] = 30;
    	monthDay[6] = 31;
    	monthDay[7] = 31;
    	monthDay[8] = 30;
    	monthDay[9] = 31;
    	monthDay[10] = 30;
    	monthDay[11] = 31;
    	
    	if (year % 4 != 0 ) 
    		monthDay[1] = 28;
    	else
    		monthDay[1] = 29;
    	
    	for (month = 1; totalDay >= 0; month++) {
    		if (totalDay <= monthDay[month-1]) {
    			day = totalDay;
    		}
    		totalDay -= monthDay[month-1];
    	}
    	
    	String yearz = Integer.toString(year);
    	String monthz = Integer.toString(month);
    	String dayz = Integer.toString(day);
    	date =yearz + " " + monthz + " " + dayz;
    	System.out.println(date);
    
	}

 

Answer 1

如果你只是想格式化打印当前年月日，几行代码就可以了，真心不用这么麻烦的。

public static void main(String[] args) {
    Date date = new Date();
    //格式化日期
    String strDateFormat = "yyyy MM dd";
    SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
    System.out.println(sdf.format(date));
}