• Installation of JDK, Tomcat and MySQL under Linux (RedHat 9.0)


    1. Installation of J2SDKGo to Java first sun. Download JDK on Linux on. Com. I download 6.0. jdk-6u4-linux-i586-rpm. Bin, FTP to Linux,Execution: Chmod 755 jdk-6u4-linux-i586-rpm Bin then execute./jdk-6u4-linux-i586-rpm.bin A lot of RPM packages will be automatically generated and installed. After that, you can use Java, jdk5 Path and class do not need to be set […]

  • Installing and configuring jdk-7 in CentOS 6.3


    Installation instructions System environment: centos-6.3Installation method: RPM installationSoftware: jdk-7-linux-x64.rpmDownload address: http://www.oracle.com/technetwork/java/javase/downloads/java-se-jdk-7-download-432154.html Original version of inspection system[[email protected] ~]# java -versionjava version “1.6.0_24”OpenJDK Runtime Environment (IcedTea6 1.11.1) (rhel- 64-Bit Server VM (build 20.0-b12, mixed mode) To further view JDK information:[[email protected] ~]# rpm -qa | grep javatzdata-java-2012c-1.el6.noarchjava-1.6.0-openjdk- To uninstall openjdk:[[email protected] ~]# rpm -e –nodeps tzdata-java-2012c-1.el6.noarch[[email protected] ~]# rpm -e […]

  • The difference between JDK and JRE is very vivid, clear and easy to understand


    In short, JDK is an SDK for developers. It provides java development environment and running environment. SDK is a software development kit, which generally refers to software development kit, including function library, compiler, etc.JDK is java development kitJRE is a Java runtime environment, which refers to the running environment of Java. It is for users […]

  • Installation and configuration of JDK without installation in CentOS


    First of all, download the installation free from the official website tar.gz I download jdk-7u75-linux-x64 tar.gzAnd unzip it to the / usr / Java / directory. This Java directory was not created by myself Setting environment variables VI open file command: VI / etc / profileMove to the end of the file and insert a […]

  • Solution of JDK Chinese font garbled under Linux


    Problem Description: Java applications deployed in Linux in Chinese will become a “mouth” word, that is, garbled Problem analysis: The following implementation methods are used in the code: new java.awt.Font (song style), Font.PLAIN , 12) then the font “Song typeface” ($Java) must be needed in JDK_ Home / JRE / lib / fonts directory) Because […]

  • Detailed explanation of jdk13.0.1 installation and configuration of environment variables (win10 platform as an example)


    1、 Download and install Download from Oracle website: https://www.oracle.com/technetwork/java/javase/downloads/index.html , click on the right to download Accept and download the corresponding platform file (win10 as an example) Open the installation package, install all the way, and remember the installation directory My path: F: Java / jdk-13.0.1 Download installation complete 2、 Configure environment variables After jdk12, […]

  • Install, upgrade and manage Java JDK environment under mac


    After Mac OSX 10.9, the system has brought its own Java 6 environment. The path is: Copy code The code is as follows: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home If you want to install and upgrade the environment to Java 7, the steps are as follows: 1. Download the installation package corresponding to JDK7 from Oracle official website,The address is […]

  • JDK installation diagram under Windows


    The first installation can refer to https://www.jb51.net/softjc/193398.html For the second installation, if the environment variables have been configured and the javac command is executed successfully under CMD, an error will be reported if the Java command is executed. Error: could not open ` d: program files (x86) \ \ Java \ \ JDK \ \ […]

  • Java configuration JDK development environment and environment variable configuration detailed text tutorial


    JDK is a software development kit of Java language, which is mainly used for Java applications on mobile devices and embedded devices. JDK is the core of the whole java development, it contains the Java running environment (JVM + java system class library) and java tools. 1. Install JDK development environment Download website: http://www.oracle.com/ Start […]

  • Tomcat — MySQL — JDK — maven


    Automated shell scripts PS: JDK, Maven and Tomcat installed here are all in the / opt directory. If you need other directories or versions, you can change the shell script as needed.PS: all the code is hand tapping, has been tested and can be used, all shared. 1: Virtual machine initialization Create a shell script […]

  • What is JDK (java development kit) and what is the use of JDK


    JDK is the first step to learn java well. Whether you want to learn java programming, build JSP Web development environment, or Android development environment, you can’t do without it. JDK1.6, 1.7, 1.8 installation package: https://www.jb51.net/software/325375.htmlOfficial download address: http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html What is JDK? 1. What is JDK? JDK is the abbreviation of java development kit, which […]

  • How to configure JDK environment under Linux


    1. Go to the official website to download the JDK package for Linux, such as jdk-8u162-linux-x64.tar.gz 2. Create a directory and copy the JDK package to it, such as home / haha / user / Java 3. Enter the directory in the console and execute tar zxvf jdk-8u162-linux-x64.tar.gz to decompress 4. Configure environment variables: Open […]