1 . package txt; 2 . 3 . import java.io.BufferedReader; 4 . import java.io.File; 5 . import java.io.FileInputStream; 6 . import java.io.InputStreamReader; 7 . 8 . /** 9.
* 读取TXE数据 10.
*/ 11 . public class ReadTxtUtils
{ 12 . public static void main(String
arg[]) { 13 . try { 14 .
String encoding = "GBK" ; //
字符编码(可解决中文乱码问题 ) 15 .
File file = new File( "c:/aa.txt" ); 16 . if (file.isFile()
&& file.exists()) { 17 .
InputStreamReader read = new InputStreamReader( 18 . new FileInputStream(file),
encoding); 19 .
BufferedReader bufferedReader = new BufferedReader(read); 20 .
String lineTXT = null ; 21 . while ((lineTXT
= bufferedReader.readLine()) != null )
{ 22 .
System.out.println(lineTXT.toString().trim()); 23 .
} 24 .
read.close(); 25 .
} else { 26 .
System.out.println( "找不到指定的文件!" ); 27 .
} 28 .
} catch (Exception
e) { 29 .
System.out.println( "读取文件内容操作出错" ); 30 .
e.printStackTrace(); 31 .
} 32 .
} 33 .} |
java读取TXT文件中的数据,每一行就是一个数,返回一个数组,代码?
List
list= new ArrayList(); BufferedReader
br= new BufferReader( new InputStreamReader( new FileInputStream( new File( "in.txt" )))); String
str= null ; while ((str=br.readLine())!= null ) { list.add( new Integer(str)); } Integer[]
i= new Integer[list.size()]; list.toArray(i); |
TXT文本中如据形如:
123
456
789
读入二维数组效果为:
temp[0][]={1,2,3};
temp[1][]={4,5,6};
temp[2][]={7,8,9};
import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.*; public class xx{ public static void main(String[]args){ String s; int[][]save=new int[3][3]; try{ BufferedReader in =new BufferedReader(new FileReader("C:\\txt.txt")); int i=0; while((s=in.readLine())!=null){ save[i][0]=Integer.parseInt(s.substring(0,1)); save[i][1]=Integer.parseInt(s.substring(1,2)); save[i][2]=Integer.parseInt(s.substring(2,3)); i++; } } catch(FileNotFoundException e){ e.printStackTrace(); } catch(IOException e){ e.printStackTrace(); } for(int i=0;i<3;i++) { for(int j=0;j<3;j++){ System.out.print(save[i][j]); } System.out.println(); } } }
或
BufferedReader
bf= new BufferedReader( new FileReader( "Your
file" )); String
lineContent= null ; int i
= 0 ; int [][]
temp = new int [ 3 ][]; while ((lineContent=bf.readLine())!= null ){ String
[] str = lineContent.split( "\\d" ); //
将 lineContent 按数字拆分 for ( int j
= 0 ;
j < str.length(); j++){ int [i][j]
= Integer.parseInt(str[j]); } i++; } |
scp|cs|ff|201101
这是d:\\a.txt的数据,与“|”分割取数据出来,保存在变量a;b;c;d里
import java.io.*; public class Test{ public static void main(String[] args)throws Exception{ String a, b, c, d; StringBuffer sb = new StringBuffer(); BufferedReader br = new BufferedReader(new FileReader("d:\\a.txt")); String s = br.readLine(); while(s != null){ sb.append(s); s = br.readLine(); } s = sb.toString(); String[] str = s.split("|"); a = str[0]; b = str[0]; c = str[0]; d = str[0]; } }