How to read from Console in Java

use the console . It's tremendously useful in some cases. The first one is REPL, means read ... you programming in it. Every console application must read input from standard input, when user ... REPL, which read Clojure expression from console and evaluate it. It use a PushbackReader ... how the console application works in Java, you can modify the REPL to suit your needs, for example

How to use BufferedInputStream read (byte[] b)

*1024]; //byte b[] = new byte[1024]; BufferedInputStream reader = new ... BufferedInputStream inherit this method from It read bytes ... static boolean SaveFile(URL url, String filename, int tries) { try { byte b[] = new byte[100 ... from the stream that passed in constructor. The number of bytes it read each time is undetermined. It depend

Difference between InputStream and Reader in Java IO

] The fundamental difference between InputStream and Reader in Java is stream works with bytes, reader works ... Stream and Reader are both abstractions in Java to help programmer deal with IO. It's doesn't ... with characters. They are different layer of abstractions. It's the same as the difference between data ... of stream and reader class. Reader gives you char and string. In Java all string are Unicode

Java push back buffer is full

Why the push back buffer is full exception happens? Let's first see what is a push back ... buffer. A push back buffer is an internal buffer inside a push back reader. And a push back reader ... . The read operation will free spaces in push back buffer, one slot a time and unread will consume ... . As the name indicated, this kind of read can read or unread(push back) chars from stream

How to use Java BufferedReader

is not enough. The usual way to use is to construct BufferedReader with an InputStreamReader ... with no buffer. So the common way to tune performance is first use BufferedReader instead of Stream IO ... The IO streams are bytes based, they have no concept of characters or strings which in Java ... and readers just works on a different level of abstraction. BufferedReader, as its name