java code to send email using smtp

);Long filelength = File.length ();byte[] filecontent = new Byte[filelength.intvalue ()];try {FileInputStream in = new FileInputStream (file);In.read (filecontent);In.close ();} catch (FileNotFoundException e) {E.printstacktrace ();} catch (IOException e) {E.printstacktrace ();}try {return new String (filecontent, encoding);} catch (Unsupportedencodingexception e) {System.err.println ("The OS does not support" + encoding);E.printstacktrace ();return null;}}private static void Postcustomernewthre

This week, the first temporary end of Java advanced knowledge, into the database learning: Java Advanced section:1. Multithreading: Thread concurrency (multiple thread operations share variables);Lock mechanism, keywords have synchronize (concurrent thread safety, lockable objects and methods), wait,notify(pessimistic) deadlock, wait,notify,notifyall;2. Network programming: UDP data Broadcast (data sender

pop-up dialog, right-click Remote Java application to create a new debug entry, as follows: Enter the name of the remote debugging in the "Name" input box, select the project you want to debug in project, enter the IP that requires the remote debugging project in "Host", which is the IP where Tomcat is located, enter the port number set in "port", such as the 8000 set above, Then tick "Allow termination of remote VM" and click "Apply".After

Java-implemented instance code based on socket communication, using ocket Server code: Copy codeThe Code is as follows:Import java. io. BufferedReader;Import java. io. InputStreamReader

Dependence 2.2 Freemarker Template file Person.ftl Package ${packagename}; Import java.util.List; /** * @author ${author} */public class ${classname} { 2.3 Create A configuration instance Configuration cfg = new Configuration (configuration.version_2_3_22); Cfg.setdirectoryfortemplateloading (templatedir); Cfg.setdefaultencoding ("UTF-8"); Cfg.settemplateexceptionhandler (Templateexceptionhandler.rethrow_handler); 2.4 Create a Data-model1 in simple cases

Kettle as an ETL tool. Its function is increasingly intact, has been the vast number of data mining enthusiasts favor. And because he is a Java open source project. To meet the needs of the project. It is necessary to study its source code, preferably integrated into a Java project. Used as an important part of the project execution process. So. Let's start with

-www-form-urlencoded"); http. setDoOutput (true); http. setDoInput (true); System. setProperty ("sun.net. client. defaultConnectTimeout "," 30000 "); // The connection times out for 30 seconds. setProperty ("sun.net. client. defaultReadTimeout "," 30000 "); // read timeout for 30 seconds http. connect (); OutputStream OS = http. getOutputStream (); OS. flush (); OS. close (); InputStream is = http. getInputStream (); int size = is. available (); byte [] jsonBytes = new byte [size]; is. read (jso

1. Using the class defined below, what is the output of the following code?Output Result:Please summarize the rules of Java field initialization according to the output of the code . There are two places in Java initialization: initialization blocks and constructors, where i

) Chinese characters are displayed on the JSP page, but garbled characters are displayed:The solution is in the JSP page encoding, because Jsp into Java file encoding problem, some of the default server is ISO-8859-1, if a JSP directly entered the Chinese, jsp treats it as a ISO8859-1 and there is certainly a problem, which we can confirm by viewing the Java intermediate file generated by Jasper (2) garbled

=seq; } PublicString getmsg () {returnmsg; } Public voidsetmsg (String msg) { This. msg =msg; } }}Run resultsCommit msg:{"MSG": "Hello1", "seq": 1}send msg:{"msg": "Hello1", "seq": 1}msg->queue2:{"msg": "Hello1", "seq": 1} Commit msg:{"MSG": "Hello2", "seq": 2}send msg:{"msg": "Hello2", "seq": 2}msg->queue2:{"msg": "Hello2", "seq": 2} Commit msg:{"MSG": "Hello1", "seq": 3}

Use internal and anonymous classes to optimize Java code-general Linux technology-Linux programming and kernel information. The following is a detailed description. By modifying Java language specifications, Java 1.1 significantly simplifies the implementation of some practical structures. Among those modifications, in

Dynamic XSL itself is a well-formed XML that converts an XML document into another XML document, or transforms it into a text file, HTML file, and so on. Here is the use of XSL to dynamically generate the Java files we want (in some ways, Java code is actually a text file), hoping to see through this article, XML and related technologies have the power! Let's st

Spring Boot creates beans using Java code and registers them to Spring. From Spring3.0, a new method is added to configure Bean Definition, which is to configure Bean Definition through Java Code.The two configuration methods differ from Xml and Annotation: The first two Xml and Annotation configuration methods are pre

= getconn ("jdbc: DB2: // 192.168.10.100: 50000/yan", "DB2inst1", "abc "); Statement stmt = conn. createStatement (); Int rs = stmt.exe cuteUpdate ("update test set password = 'kkk 'where name = 'lil '"); Stmt. close (); Conn. close (); System. out. println (); } // Delete data Public static void delete () throws Exception { System. out. println ("delete data ...."); Connection conn = getconn ("jdbc: DB2: // 192.168.10.100: 50000/yan", "DB2inst1", "abc "); Statement

!Gradle plug 0.14.0, Runproguard renamed to MinifyenabledRemove Useless resourcesAndroid Gradle plug starts with 0.14.0 and supports automatic removal of unused resources.However, this switch is off by default. Can be opened in build type using shrinkresources true. Note that the use of this feature depends on the code shrinking, so minifyenabled must also be turned on. Support for automatic

Download: Jar.zip2. Step Two: Create a connection through the method getconnection () in the DriverManager class, connect to the database using the six-factor wxb to catch the exception with Try...catch. The code is as follows:Package cn.nxl123.www;import Java.sql.DriverManager;import java.sql.SQLException;Public class Connect {Public static void Main (string[] args) {String classname= "Com.mysql.jdbc.Driv

Eclemma is a free, open source tool for detecting Java code coverage that can be easily installed in eclipse. Below I will briefly introduce the following plugin:One Eclemma installation In Eclipse, open: Help–>eclipse Marketplace Search "Eclemma" Finally, follow the prompts to install Eclemma and restart eclipse two simple use of Eclemma(1) using