自己学习的java笔记

package java作业; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Scanner; public class Mytime { public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("请输入第一段时间："); int hour= sc.nextInt(); int minute= sc.nextInt(); int second= sc.nextInt(); System.out.println("请输入第二段时间："); int hour1= sc.nextInt(); int minute1= sc.nextInt(); int second1= sc.nextInt(); System.out.println("总共几秒"); addSecond(second,second1); System.out.println("总共几分"); addminute(minute,minute1); System.out.println("总共几小时"); addhour(hour,hour1); System.out.println("差了几小时"); subhour(hour,hour1); System.out.println("差了几分钟"); subminute(minute,minute1); System.out.println("差了几秒钟"); subsecond(second,second1); System.out.println("下面是当前时间"); dispaly(); } public static void dispaly(){ Date now=new Date(); SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd"); System.out.println(sdf.format(now)); } public static void addSecond(int second,int second1){ if (second>60||second<0||second1>60||second1<0){ System.out.println("当前时间错误"); }else { int sum=0; sum=second+second1; System.out.println(sum); } } public static void addminute(int minute,int minute1){ if (minute>60||minute<0||minute1>60||minute1<0){ System.out.println("当前时间错误"); }else { int sum = 0; sum = minute + minute1; System.out.println(sum); } } public static void addhour(int hour,int hour1){ if (hour>60||hour<0||hour1>60||hour1<0){ System.out.println("当前时间错误"); }else { int sum = 0; sum = hour + hour1; System.out.println(sum); } } public static void subsecond(int second,int second1){ if (second>60||second<0||second1>60||second1<0){ System.out.println("当前时间错误"); }else { int sub = 0; if (second >= second1) { sub = second - second1; } else { sub = second1 - second; } System.out.println(sub); } } public static void subminute(int minute,int minute1){ if (minute>60||minute<0||minute1>60||minute1<0){ System.out.println("当前时间错误"); }else { int sub = 0; if (minute >= minute1) { sub = minute - minute1; } else { sub = minute1 - minute1; } System.out.println(sub); } } public static void subhour(int hour,int hour1){ if (hour>60||hour<0||hour1>60||hour1<0){ System.out.println("当前时间错误"); }else { int sub = 0; if (hour >= hour1) { sub = hour - hour1; } else { sub = hour1 - hour; } System.out.println(sub); } } }