BufferedReader vs Console vs Scanner

Question

Hi I'm new to Java and I would like to know what is the best choice to read a user Input in the console, as far as I know there are 3 ways to do it:

1. Console console = System.console();
2. BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
3. Scanner reader = new Scanner(System.in);

Which one should I choose? Why that one and not the other ones?

Answer 1

BufferedReader

• Since Java 1.1
• Throws checked exceptions
• Can read single chars, char arrays, and lines
• Fast

Scanner

• Since Java 1.5
• Throws unchecked exceptions
• Can read lines, numbers, whitespace-delimited tokens, regex-delimited tokens
• Difficult to read single characters

Console

• Since Java 1.6
• Throws unchecked exceptions
• Not always available (e.g. if input/output is redirected, and in Eclipse)
• Can read lines
• Underlying reader can read single chars and char arrays (but stops at line bounds)
• Can read passwords (i.e. read without displaying the characters)

Recommendation: Scanner

The methods for reading numbers are very useful (though beware when using nextInt() etc. followed by nextLine()). The exceptions are unchecked, so you do not have to write boilerplate try/catch blocks.

Answer 2

beside these you can also use datainputstream etc.

Now BufferedReader Read text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines. The buffer size may be specified, or the default size may be used. The default is large enough for most purposes.

Where Scanner is a simple text scanner which can parse primitive types and strings using regular expressions. A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace. The resulting tokens may then be converted into values of different types using the various next methods. Scanner is used for parsing tokens from the contents of the stream while BufferedReader just reads the stream and does not do any special parsing.

also check the below link it will surely help you.......

http://www.javawebtips.com/50474/