Please tell me how to read plain text files in Java

ASCII is a text file. You should use the Reader class to read the text file. Java also supports reading binary data using the InputStream class. If you want to read large amounts of data, use the BufferedReader class at the top of the FileReader class to improve read performance.

For instructions on how to use the Reader class, please visit:

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Java 7

new String(Files.readAllBytes(...)) or Files.readAllLine(...)

Java 8

Files.lines(..).forEach(...)