filerw002.java

java编写的一个读写文档

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class FileRW002 {

	/**
	 * @param <TextFile>
	 * @param args
	 */
	public static  void main(String[] args) throws IOException {
		FileReader fr = new FileReader("200311.txt");//建立FileReader对象，并实例化为fr
		BufferedReader br = new BufferedReader(fr);//建立BufferedReader对象，并实例化为br
		
		
		FileWriter fw = new FileWriter("2003-58724.txt");
		BufferedWriter bw = new BufferedWriter(fw);
		//TextFile test = new TextFile("58731-2003.txt");
		
		int i = 0;
		String s;
		while((s = br.readLine()) != null){
			//s = br.readLine();
			String[] ss = s.split(",");
			
			if(ss[0].equals("58724")){
				i++;
				System.out.println(i);
				//bw.write(String.valueOf(i));
				//bw.write("        ");
				for(int j = 0 ; j < ss.length ; j++){
					if((j == 3) || (j == 4) || (j == 6) || (j == 8) || (j == 1) || (j == 10)){
						if (ss[j].equals("/")) ss[j] = "0";
					    System.out.print(ss[j] + "  ");
					    bw.write(ss[j]);
					    bw.write(" ");
					}
				}
				System.out.println("    ");
				bw.newLine();
			}
		}
		br.close();
		bw.close();
		
		System.out.println("Data Sorting Over................!!!!!!!!!!!");
		FileReader fr1 = new FileReader("2003-58724.txt");//建立FileReader对象，并实例化为fr
		BufferedReader br1 = new BufferedReader(fr1);//建立BufferedReader对象，并实例化为br
		
		FileWriter fw1 = new FileWriter("2003-day-58724.txt");
		BufferedWriter bw1 = new BufferedWriter(fw1);
		//while((s = br1.readLine()) != null){
			s = br1.readLine();
			String[] ss = s.split(" ");
			String[] ts = ss[0].split("-");
			int mmon = 4;
			while( mmon < 13){
				while(ts[1].equals(String.valueOf(mmon))) {
					int ddate = 1;
					while( ddate < 32) {
						double sumofdwind = 0;
						double sumofdtemp = 0;
						double sumofdpres = 0;
						double sumofdrain = 0;
						double sumofdhumi = 0;
						//String ddstr = String.valueOf(ddate);
						int jj = 0;
						String jjs = null;
						while(ts[2].equals(String.valueOf(ddate))) {
							jj ++ ;
							sumofdwind = sumofdwind + Double.valueOf(ss[2]);
							sumofdtemp = sumofdtemp + Double.valueOf(ss[3]);
							sumofdpres = sumofdpres + Double.valueOf(ss[4]);
							sumofdrain = sumofdrain + Double.valueOf(ss[5]);
							sumofdhumi = sumofdhumi + Double.valueOf(ss[6]);
							s = br1.readLine();
							ss = s.split(" ");
							ts = ss[0].split("-");
						}
						jjs = String.valueOf(jj);
						sumofdtemp = sumofdtemp/Double.valueOf(jjs);
						sumofdpres = sumofdpres/Double.valueOf(jjs);
						sumofdrain = sumofdrain/Double.valueOf(jjs);
						sumofdhumi = sumofdhumi/Double.valueOf(jjs);
						sumofdwind = sumofdwind/Double.valueOf(jjs);
						bw1.write(String.valueOf(sumofdwind)); bw1.write(" ");
						bw1.write(String.valueOf(sumofdtemp)); bw1.write(" ");
						bw1.write(String.valueOf(sumofdpres)); bw1.write(" ");
						bw1.write(String.valueOf(sumofdrain)); bw1.write(" ");
						bw1.write(String.valueOf(sumofdhumi)); bw1.write(" ");
						bw1.newLine();
					}
				}
				mmon ++;
				s = br1.readLine();
				ss = s.split(" ");
				ts = ss[0].split("-");
			}
		//}
		br1.close();
		bw1.close();
		
		System.out.println("Data Sorting Over................!!!!!!!!!!!");
	}
}