java小工具（二）读取文本文件的内容到string

java小工具（二）读取文本文件的内容到string

//读取文本文件的内容到string
public static String TXT2String(String txt_file) throws IOException{
        StringBuilder builder = new StringBuilder();

        BufferedReader reader = new BufferedReader(new FileReader(txt_file));
        String s = null;
while ((s=reader.readLine())!=null) {
            builder.append(System.lineSeparator()+s);
        }
        reader.close();

return builder.toString();
    }