Java Read / Write Text file

How to write a Java Program to Java Read / Write Text file ?

Solution:

private String readTextFile(String filePath) {
    StringBuilder str = new StringBuilder("");
    try {
        FileInputStream fips = new FileInputStream(filePath);
        InputStreamReader ipsReader = new InputStreamReader(fips, "UTF-8");
        int character;
        while ((character = ipsReader.read()) != 1) {
            str.append((char) character);
        }
        ipsReader.close();
    } catch (FileNotFoundException ex) {
        // may happen during file IO mapping
        System.out.println(ex.getCause().getMessage());
    } catch (UnsupportedEncodingException ex) {
        // may happen during load unsupported charset file
        System.out.println(ex.getCause().getMessage());
    } catch (IOException ex) {
        // may happen during read file
        System.out.println(ex.getCause().getMessage());
    }
    return str.toString();
}

private void writeTextFile(String filePath, String content) {
    try {
        FileOutputStream fops = new FileOutputStream(filePath);
        OutputStreamWriter opsWriter = new OutputStreamWriter(fops, "UTF-8");
        opsWriter.write(content);
        opsWriter.close();
    } catch (FileNotFoundException ex) {
        // may happen during file IO mapping
        System.out.println(ex.getCause().getMessage());
    } catch (UnsupportedEncodingException ex) {
        // may happen during load unsupported charset file
        System.out.println(ex.getCause().getMessage());
    } catch (IOException ex) {
        // may happen during read file
        System.out.println(ex.getCause().getMessage());
    }
}

Learn More :

Read

Text file

Write

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