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/lib/dt.jarReboot! (or edit source /etc/profile to be valid one time )Javac Java =version ConfirmationThis setting applies to individual userscd/home/{ User host directory }Vim. BASHRCAt the end of the BASHRC file, add the following statementExport JAVA_HOME=/USR/LOCAL/{JDK path }Export JRE_HOME=/USR/LOCAL/{JDK path }/jreExport path= $JAVA _home/bin: $JAVA _home/jre/bin: $PATHExport classpath=.: $JAVA _home/lib/tools.jar: $JAVA _home/lib/dt.jar2, installation MyEclipseDownload the myeclise for L
https://my.oschina.net/u/2306127/blog/538139Abstract: The version of GCC used in Ubuntu is different from the release version, and when compiling the Android system different versions are recommended to compile with different gcc, so can you change the system's GCC to suit the needs of the Android build environment? The answer is yes.The version of GCC used in Ubuntu is different from the release version, and when compiling the Android system different versions are recommended to compile with di
Download the JDK Compression pack installation directlyDivided into the following 5 steps1. Download the JDK on the website2. Unzip and drop to the specified directory3. Configure Environment variables4. Set the system default JDK5. Test the JDK1. Download JDK Address: http://www.oracle.com/technetwork/articles/javase/index-jsp-138363.htmlSelect the appropriate. gz package to download2. Unzip and place in the specified directory (take jdk-7u60-linux-x64.gz as an example)To create a directory:sud
Environment
Java_home=/usr/java/jdk_8u60Export JRE_HOME=/USR/JAVA/JDK_8U60/JREExport classpath=.: $JAVA _home/lib: $JRE _home/lib: $CLASSPATHExport path= $JAVA _home/bin: $JRE _home/bin: $PATH
10. Restart the computer for the configuration to take effect.11. Is it over? No!!!If you are using an IDE such as MyEclipse, or if you have multiple JDK versions installed, continue looking down ↓↓↓12. Modify the default JDK (note the replacement path)
sudo update-
1. DownloadOracle website Download jdk7http://www.oracle.com/technetwork/java/javase/downloads/ Jdk7-downloads-1880260.html Select the appropriate version according to the operating system of the machine, here we choose jdk-7u75-linux-x64.tar.gz 2. Installation
sudo MKDIR/USR/LIB/JVM
sudo tar zxvf./jdk-7u75-linux-x64.tar.gz-c/USR/LIB/JVMCD/USR/LIB/JVM
sudo mv Jdk-7u75-linux-x64/java-7-sun
3. Configure Environment variablesVi/etc/environment Add:Export java_home=/usr/lib/jvm/jav
1. Download to Oracle's websiteHttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htmlSelect Accept License and select the JDK download that fits your model.2, unzip the file, modify the filenamesudo mkdir/usr/lib/jvm sudo tar zxvf jdk-8u45-linux-x64.tar.gz-c/usr/lib/jvm CD/USR/LIB/JVM sudo mv jdk1.8.0_45 java3. Add Environment Variables$ sudo gedit ~/.BASHRCAdd the following:Export Java_home=/usr/lib/jvm/java export JRE_HOME=${JAVA_HOME}/JRE export classpath=.:${ja
, try the Ubuntu system, and then set up a efibootmgr will be able to new boot)If using Ubuntu Grub boot does not enter the Mac, then power on and hold down the option key to select Mac Boot, and then install refit boot under Mac, installed in the Mac terminal to enter:cd/efi/refit/./enable-always.sh start Refit.Restart and you'll see the Ubuntu options.3. Install vimSudo Apt-get Install Vim4. reduce the gcc version1. sudo apt-get install gcc-4.4 g++-4.4 g++-4.4-multilib gcc-4.4-multilib2. sudo
Q: "JDK installation Configuration" Linux distributions use OPENJDK by default, how do I use sun jdk?A:1. Download Sun version jdk-xxxxx-xxx.tar.gz, unzip to a directory (for example:/OPT/JAVA/JDK), and set Java_home2.sudo update-alternatives--install/usr/bin/java java $JAVA _home/bin/java 777sudo update-alternatives--install/usr/bin/javac Javac $JAVA _home/bin/javaC 777A similar set of Javah,javap,javadoc,
version of JAVA8-JDK and JAVA8-JRECopy the downloaded files to the/usr/local/java directory, sudo tar-zxvf extract, get jdk1.8.0-25 and jre1.8.0-25 two files directoryThree. Configuring the/etc/profile Filesudo gedit/etc/profile open the profile file and add it at the end of the fileJava_home=/usr/local/java/jdk1.8.0_25Path= $PATH: $HOME/bin: $JAVA _home/binJre_home=/usr/local/java/jre1.8.0_25Path= $PATH: $HOME/bin: $JRE _home/binExport Java_homeExport Jre_homeExport PATHSave the file and exitT
-downloads-javase6-419409.html, select Java SE development Kit 6u45, and then click Accept on the newly opened pageAccept License Agreement". Once accepted, select "Jdk-6u45-linux-x64.bin" to download. If you are not logged in, the system will first go to the login page and enter the username and password you registered with the Oracle website.Step three: Install Oracle JDK(1) Create Java directory $ sudo mkdir-p/usr/local/java copy your downloaded Jdk-6u45-linux-x64.bin to/usr/local/java direct
/ java-archive-downloads-javase6-419409.html, select Java SE development Kit 6u45, and then click Accept on the newly opened pageAccept License Agreement". Once accepted, select "Jdk-6u45-linux-x64.bin" to download. If you are not logged in, the system will first go to the login page and enter the username and password you registered with the Oracle website.Step three: Install Oracle JDK(1) Create Java directory $ sudo mkdir-p/usr/local/java copy your downloaded Jdk-6u45-linux-x64.bin to/usr/loc
-bit system that downloads 32-bit JDK packages from the JDK website http://www.oracle.com/technetwork/java/javase/downloads/ jdk8-downloads-2133151.html), download here is jdk-8u144-linux-i586.tar.gz, unzip:# mkdir ~/Java# tar -zxvf jdk-8u144-linux-i586.tar.gz -C ~/Java/4.3 Setting environment variables# sudo vim /etc/profileWrite the code at the end (XXX is the user name, which is the login account)export JAVA_HOME=/home/rong/Java/jdk1.8.0_152export JRE_HOME=$JAVA_HOME/jreexport CLASSPATH=.:$JA
specifically introduced: "Golang-gob and RPC."
OK, read gob This article, we know protobuf need to solve the basic problem, the following we combine the source to see protobuf knowledge points.
$GOPATH \src\github.com\golang\groupcache\groupcachepb\groupcache.proto content is as follows:
1syntax="proto2"; 2 3packagegroupcachepb; 4 5messageGetRequest{ 6requiredstringgroup=1; 7requiredstringkey=2;//notactuallyrequired/guaranteedtobeUTF-8 8} 910messageGetResponse{11optionalbytesvalue=1;12optional
Data mode1. GET mode.The GET method completes the data submission by appending parameters to the network address, for example, in address Http://www.google.com/webhp?hl=zh-CN, the previous section http://www.google.com/webhp represents the URL of the data submission, The following section HL=ZH-CN represents the additional parameters, where HL represents a key (key) and ZH-CN represents the value of the key (value). The program code is as follows:HttpWebRequest req = (HttpWebRequest) httpwebre
WebService provided by. net.
// Generate soap information for WebService method call and specify the Soap version
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope (SoapEnvelope. VER10 );Envelope. bodyOut = soapObject;
Envelope. dotNet = true; // whether to call the WebService developed by DotNet
6. Create an HttpTransportSE transmission object and pass in the WebService server address
String SERVICE_URL = "http: // 192.168.66.66: 82/data. asmx ";
HttpTransportSE ht = new HttpT
HttpWebRequest object, do not directly use the HTTP WebRequest constructor, but use WebRequest. the Create method initializes an HttpWebRequest instance, for example:
HttpWebRequest hwr = (HttpWebRequest) WebRequest. Create (http://www.163.com /);
After this object is created, you can set the content of many HTTP header fields through the HttpWebRequest attribute, such as hwr. AddRange (,); set the receiving object range to-bytes.
When the HttpWebReques object uses the
filestream ("C: // ims ", filemode. Open );
// Allocate byte buffer to hold File ContentsByte [] indata = new byte [4096];
// Loop through the local file reading each data block// And writing to the request Stream BufferInt bytesread = RDR. Read (indata, 0, indata. Length );While (bytesread> 0){Reqstream. Write (indata, 0, bytesread );Bytesread = RDR. Read (indata, 0, indata. Length );}
RDR. Close ();Reqstream. Close ();
Req. getresponse ();
// You
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