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Update-alternatives is a script for switching between multiple commands of the same type and can be installed in Debian via the Apt-get install dpkg. Before explaining the details of Update-alternatives, let's take a look at the examples already in the system. Open the terminal and execute the following command:LsResults: lrwxrwxrwx 1 root root 2011-03-12 15:20/usr/bin/java-/etc/

Use alternatives to convert the java version-general Linux technology-Linux programming and kernel information. The following is a detailed description. After jdk was installed, java and javac were replaced with the java and javac of gij in/usr/bin. Some people on the Internet said that they could use a tool named alternativs to migrate the software version in linux. They decided to use alternatives to mig

Tian haili @ csdn Different Android platforms use different JDK versions during compilation. For example, froyo (2.2) and its earlier versions require JDK; gingerbread and later versions require JDK. If you want to build different platform projects in an environment, you need to install different JDK. It takes time and effort to install JDK repeatedly during project switching. Update-alternatives provides a solution for this situation. This article

Up vote 1 down vote favorite I typed:sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/ jdk1.8.0/bin/java" 1It ' s says alternatives--install needs link name path priorityCommand-Line Edubuntu ShareImprove this question Edited Jul 5 ' + at 17:48 Guntbert4,344 Asked Jul 5 ' + at 16:22 Swapnil18

Install JDK 6 first Sudo apt-Get install sun-java6-jdk Then you need to set the default JavaProgramSudo Update-alternatives -- config JavaEnter the corresponding options as prompted, and set them to JDK 6. The following settingsSudo Vim/etc/environment Add the following two lines:Classpath =/usr/lib/JVM/Java-6-sun/libJava_home =/usr/lib/JVM/Java-6-sunIf classpath and java_home are already set, change them to the above format and press ZZ

View the location of the Java commandFind the soft link location for/etc/alternatives/javaIt allows us to see all the optional commands for a command. Execute code:There are two types of alternative: automatic and manual. The initial state of each alternative is automatic, and if the system discovers that the administrator has manually modified a alternative, its status is automatically changed to manualView the current Java versionMy JDK is in this f

Previously, the jdk of ubuntu was installed with the apt-get install command. The default installation is openjdk, and the path is/usr/lib/jvm /. If you need to switch or upgrade the java version, you can use update-alternatives. Of course, you can uninstall and reinstall it, or you can install it by setting environment variables. This section describes how to install update-alternatives.Since the development of Linux, there have been a lot of availab

In the past two days, I wanted to develop the android development environment in Linux, But I encountered a big problem when installing Sun's Java 6. The source cannot be found. The final installation method is to download the binfile of Java 6 on the official website, modify the/etc/profile file, and specify the location of Java, so that the Java command is available. Then you need a command to specify which software the Java command is provided, that is, the default software. The reason for th

As a developer, when developed on Windows, it uses artifacts such as total Commander, search directories, view files, batch rename, and more.TC is a paid version, there is a free alternative version just manager:http://www.justmanager.ru/downloads/Prior to working at Altium, a large number of Ukrainian programmers liked to use far Manager, full of the C/borland C + + in the University of C + + when the sense of vision. Download here: https://farmanager.com/download.php?l=enenjoy!Windows Develope

Xutils-android Tool Library Afinal AlternativesHttps://github.com/wyouflf/xUtils(Afinal is the work of the people, Xutils is modified according to Afinal, but also the works of the people)Xutils. As the name implies, it is a tool library.Xutils Introduction Xutils contains a lot of useful Android tools. Xutils originated from the afinal framework, and the afinal was properly streamlined, and some modest expansions and refactorings were made. Xutils has some characteristics of af

, just for the sake of compatibility let it from 1.7 live to 1.9.This article also does not have any content, next will use this function to do some meaningful things to show the next ~ in the low version of IE, a tag will appear when the mouse press the dotted border, which is caused by focus. We can solve this problem simply by doing something in the global event. Focus is not bubbling in modern browsers, but it can be bubbling in the lower version of the browser. Therefore, it is valid for fo

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.ObjectiveAfter upgrading the Android SDK to 23, the getdrawable and GetColor method hints are obsolete.Solution SolutionsGetresources (). GetColor replaced with Contextcompat.getcolorGetresources (). Getdrawable replaced with contextcompat.getdrawableExamples are as follows:int colorint = getresources (). GetColor (r.color.coloraccent); //Returns a value of type int of color: -49023 int col

; } @SEX Public intGetsex () {returnsex; } PublicString getsexdes () {if(Sex = =MALE) { return "male"; } Else { return "female"; }}} @IntDef ({MALE, FEMALE}) @Retention (Retentionpolicy.source) Public@interface SEX {}}If we try to pass a value that is not within the limit when we call the Setsex () method, then the compilation will not pass and there is an error message. Similarly, we can also use @stringdef.As we can see here, @SEX annotations can be placed on attribut