在java中连接多个.txt文件 [英] concatenating a number of .txt files in java

问题描述

我有很多.txt文件。我想连接这些并生成一个文本文件。我怎么在java中做到这一点？
以下是这种情况

I have a number of .txt files. I would like to concatenate those and generate a text file. How would i do it in java? Following is the case

        file1.txt file2.txt 

串联结果

             file3.txt

以下是 file1.txt 的内容 file2.txt

推荐答案

逐个文件读取并写入目标文件。如下所示：

Read file-by-file and write them to target file. Something like the following:

    OutputStream out = new FileOutputStream(outFile);
    byte[] buf = new byte[n];
    for (String file : files) {
        InputStream in = new FileInputStream(file);
        int b = 0;
        while ( (b = in.read(buf)) >= 0) {
            out.write(buf, 0, b);
            out.flush();
        }
    }
    out.close();

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