深入浅析java中的数据处理机制

import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.FileWriter;public class MyFile {public static void SaveFile(String filename,int[][] arr){ try { File file = new File(filename); //存放数组数据的文件 FileWriter out = new FileWriter(file); //文件写入流 try { getRecord(out,arr); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }  out.close(); } catch (Exception ex) {ex.printStackTrace();}} private static void getRecord(FileWriter out,int[][] arr)throws Exception { //将数组中的数据写入到文件中。每行各数据之间TAB间隔 for(int i=0;i<arr.length;i++){ for(int j=0;j<arr[0].length;j++){  out.write(arr[i][j]+"\t"); } out.write("\r\n"); } } public static void ReadFile(String filename,int[][] arr2){ try {File file = new File(filename); //存放数组数据的文件 BufferedReader in = new BufferedReader(new FileReader(file)); //  try { readRecord(in,arr2); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }  in.close(); } catch (Exception ex) {ex.printStackTrace();}}private static void readRecord(BufferedReader in,int[][] arr2)throws Exception {String line; //一行数据 int row=0; //逐行读取，并将每个数组放入到数组中 while((line = in.readLine()) != null){  String[] temp = line.split("\t");   for(int j=0;j<temp.length;j++){//   arr2[row][j] = Double.parseDouble(temp[j]);  arr2[row][j] = Integer.parseInt(temp[j]);  }  row++; }} }