Java：读取txt文件并将其保存在字符串数组中但没有反斜杠（空格）吗？

Question

I am using this code to read a txt file, line by line.

// Open the file that is the first command line parameter 
FileInputStream fstream = new FileInputStream("/Users/dimitramicha/Desktop/SweetHome3D1.txt");
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
// Read File Line By Line
int i = 0;
while ((strLine = br.readLine()) != null) {
    str[i] = strLine;
    i++;
}
// Close the input stream
in.close();

and I save it in an array.

Afterwards, I would like to make an if statement about the Strings that I saved in the array. But when I do that it doesn't work, because (as I've thought) it saves also the spaces (backslashes). Do you have any idea how I can save the data in the array but without spaces?

Answer 1

I would do:

strLineWithoutSpaces = strLine.replace(' ', '');
str[i] = strLineWithoutSpaces;

You can also do more replaces if you find other characters that you don't want.

Answer 2

看一下String中的replace方法，并在将其放入数组之前在strLine上调用它。

Answer 3

You can use a Scanner which by default uses white space to separate tokens. Have a look at this tutorial.