求把这段C++代码转换成java代码~不胜感激啊
#include<iostream>
#include <cstdlib>
#include <stdio.h>
#include <string.h>
#include <fstream>
#include <sstream>
#define M 500
using namespace std;
char s[M];

struct Node {
  // int year, month, date;
  int hour, minutes, seconds;

  Node() {
  hour = minutes = seconds = 0;
  }

  bool operator<(Node a) {
  return hour * 60 * 60 + minutes * 60 + seconds < a.hour * 60 * 60 + a.minutes * 60 + a.seconds;
  }

  Node turn(Node a) {
  Node t;
  t.minutes = minutes - a.minutes;
  t.seconds = seconds - a.seconds;
  // t.date = date - a.date;
  // t.month = date - a.date;
  // t.year = year - a.year;
  t.hour = hour - a.hour;
  if (t.seconds < 0)t.seconds += 60, t.minutes--;
  if (t.minutes < 0)t.minutes += 60, t.hour--;
  t.minutes += t.seconds / 60;
  t.seconds %= 60;
  t.hour += t.minutes / 60;
  t.minutes %= 60;
  return t;
  // t.hour += t.date * 24 + t.month * 30 + t.year * 365;
  }

  void add(Node a) {
  minutes = minutes + a.minutes;
  seconds = seconds + a.seconds;
  hour = hour + a.hour;
  if (seconds < 0)seconds += 60, minutes--;
  if (minutes < 0)minutes += 60, hour--;
  minutes += seconds / 60;
  seconds %= 60;
  hour += minutes / 60;
  minutes %= 60;
  }
} f, t, z, now;

struct Team {
  char name[M];
  Node time[M];
  int num;
  Node ttime;
  int solve[M];

  Team() {
  memset(solve, 0, sizeof (solve));
  num = 0;
  }
} team[M];

int cmp(Team a, Team b) {
  if (a.num != b.num)
  return a.num > b.num;
  return a.ttime < b.ttime;
}
int pro[M];

int main(int argc, char** argv) {
  ifstream out;
  int id;
  char name[25];
  int problem;
  char state[25];
  char L[3][25];
  char tmp[50];
  int y, mon, d;
  int h, min, se;
  cin >> s;
  out.open(s);
  int num;
  bool ok = false;
  int n = 0;
  out >> tmp >> s;
  sscanf(s, "%d:%d:%d", &f.hour, &f.minutes, &f.seconds);
  out >> tmp >> s;
  sscanf(s, "%d:%d:%d", &t.hour, &t.minutes, &t.seconds);
  out.get();
  out.getline(s, 1000, '\n');
  stringstream sin(s);
  while (sin >> num) {
  pro[n] = num;
  n++;
  }
  int nn = 0;
  int pid;
  while (!out.eof()) {
  out.getline(s, 1000, '\n');
  sscanf(s, "%d %s %d %s %s %s %s %s %d:%d:%d", &id, &name, &problem, &state, &L[0], &L[1], &L[2], &tmp, &now.hour, &now.minutes, &now.seconds);
  for (int i = 0; i < n; i++) {
  if (pro[i] == problem) {
  num = i;
  break;
  }
  }
  pid = -1;
  for (int i = 0; i < nn; i++) {
  if (strcmp(team[i].name, name) == 0) {