source code is as follows :
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
public class ReadTxt {
static ArrayList<String> logData = new ArrayList<String>();
static String text = null;
public static void read(String filePath) {
try {
FileReader input = new FileReader(filePath);
BufferedReader br = new BufferedReader(input);
while (( text = br.readLine()) != null) {
logData.add(text);
}
br.close();
input.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
after the following code is my brother conducted a test class :
brother I had wanted to be a hard disk data in the file is read into memory , and then output to a file ...
test class source code is as follows :
public class Test32 {
static String[] str1 = null;
static String[] str8 = null;
static String str10 = null;
static String Path = "D:\\MyDoc\\Dport\\MakeaTry.txt";
static int len = -1;
public Test32(){
String str = "E:\\8.txt";
ReadTxt.read(str);
len = ReadTxt.logData.size();
str8 = new String[len];
for(int i=0;i<len;i++){
str8[i]=ReadTxt.logData.get(i);
}
}
public static void main(String[] args){
new Test32();
for(int i=0;i<len;i++){
str10 =str10+str8[i];
}
str1 = str10.split(".");
int len1 = str1.length;
System.out.println(len1);
for(int i = 0;i<len1;i++){
WriteTxt.list.add(str1[i]);
}
}
}
However , I get the final output is:
master, I was testing on line 18 class constructor call me , and, in the first 23 rows of the output .
my data in the file is the " one string " " Total 200 string data " "Every one string using a". " separated " I wrote the code by a brother , you should be able to get:
output data should be:
200 , right ?
Why is my code here, brother , and brother I expected , resulting in inconsistent ?
hope to get a master 's coaching:
Here " expected output effect is inconsistent with the " What is the reason ... ?
Thank you, master ! !
hundred points offer ! !
a perfect running day and night to build toward the dreamer
September 15, 2013 Sunday 6:39
--- --- Solution --------------------------------------------
str10 = str10 + str8 [i]; this place to add a separator to str10 = str10 + "." + str8 [i]; behind str1 = str10.split (" . " ) ; instead str1 = str10.split (" \ \. "); escape , " . " is a regular expression .
----- - Solution --------------------------------------------
see it split the API, public String [] split (String regex)
him it is received by a regular expression , and the. is a regular expression metacharacters , if you use it for segmentation,
must be escaped \ \ .
------ For reference only ---------------------------------- -----
top one first . . . . . . . . . Are watching . ------ For reference only -------------------------------------- -
landlord preceding code are nothing big issue should be str1 = str10.split ("."); out of the question
try with spaces str1 = str10.split ("");
The reason output 0 , it should be no documentation " ." character , so the output is 0
------ For reference only ----- ----------------------------------
OKay! !
Thank you for last night, is your brother ! !
Thank wind_elf brother on the head ! !
wind_elf brother ..
As the " last night that you" brother, is already " the core layer is the brother of my questions allies" , and the , and his reply is indeed a brother I get most knowledge ..
brother I ..
will score the most , 80 minutes, to "Last night is your " brother of ...
brother I'll give you 20 points , hope you do too few ..
Japan to have a chance , my brother , must make up the score ! !
caofeng891102 brother ..
Due to time constraints, brother me, click on the "knot affixed to the sub ", the only thought : your "top up " for the help of love ..
okay, Japan, longer , your name , brother I have in mind , I will forward your favor , in the future, look for opportunities to make up ! !
Thank you brother for the help ! !
------ For reference only ---------------------------------------
sorry ...
constantly swimming fish brother , brother I ...
of time in replies ..
get your help solve the problem ..
your nickname , brother I've also written down ...
Japan, longer , some of you will opt to her brother's friendship, filled ! !
------ For reference only -------------------------------------- -
brother my WriteTxt class code is as follows:
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class WriteTxt{
static ArrayList<String> list=new ArrayList<String>();
public static void write(String filePath){
try {
FileWriter output = new FileWriter(filePath);
BufferedWriter bf= new BufferedWriter(output);
for(String l:list ){
bf.write(l+ "\r\n");
}
bf.flush();//此处很关键，如果不写该语句，是不能从缓冲区写到文件里的
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void writeDatatoFiletail(ArrayList<String> Data,String filePath){
FileWriter output = null;
try {
output = new FileWriter(filePath,true);
int len = Data.size();
for(int i = 0;i<len;i++){
BufferedWriter bf= new BufferedWriter(output);
bf.write(Data.get(i));
bf.flush();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
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