binary search java code example

Bufferedoutputstream (OutputStream out) of the new byte array size 8192 is (out, 8192); }//constructor: "Buffered output stream" public bufferedoutputstream (outputstream out, int size) {Super] with a new byte array size ; if (size Description Bufferedoutputstream's source code is very simple, here is a simple description of the idea of Bufferedoutputstream: Bufferedoutputstream through a byte array to buffer the data, when the buf

The Creates a successful string object whose length is fixed and cannot be modified and edited. Although you can use "+" to add new characters or strings, "+" produces a new instance of string that creates new strings objects in memory. If you repeatedly modify the string, you will greatly increase the overhead of the system. J2SE has increased the String-builder class of variable character sequences from 5.0, greatly increasing the efficiency of increasing strings frequently. Let's look at a s

Java regularization makes it easy to extract eligible content from strings. 1. Extract all cell phone numbers in the string: private void Getphonenum (String smsbody) {pattern Pattern = Pattern.compile ("(13|14|15|18) \\d{9}"); Matcher Matcher = Pattern.matcher (smsbody); while (Matcher.find ()) { System.out.println (Matcher.group ()); } }2. In Android development, it is sometimes necessary to extra

(); //Create sessionSession = Connection.createsession (false, Session.auto_acknowledge); //Create a message queue that connects HelloWorldDestination = Session.createqueue ("HelloWorld"); //Create message ConsumersMessageconsumer =Session.createconsumer (destination); while(true) {TextMessage TextMessage= (TextMessage) messageconsumer.receive (100000); if(TextMessage! =NULL) {System.out.println ("Received message:" +Textmessage.gettext ()); }Else { Break; } }