Alternatives java

Author: e | 2025-04-23

Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java-alternatives updates all alternatives belonging to one runtime or development kit for the Java language.

Java Alternatives: The Most Popular Java

Java is a collection of software better known for it’s cross platform availability was developed by Sun Microsystems in 1995. Java platform is used by millions of applications and websites (specially used in banking sites) due to its fast, secure and reliable nature. Today, Java is everywhere, from desktops to data-centers, game consoles to scientific computers, mobile phones to the Internet, etc…There are more than one version of Java can be installed and running on same computer and also it’s possible to have different version of JDK and JRE simultaneously on a machine, actually there are abundant of applications that requires Java-jre (Java Runtime Environment) and those who are developer required Java-sdk (Software Development Kit).A lots of Linux distribution comes with other version of Java called OpenJDK (not the one developed by Sun Microsystems and acquired by Oracle Corporation). OpenJDK is an open source implementation of Java application. Latest stable release of Java version is 9.0.4. Install Java 9 in Linux1. Before installing Java, make sure to first verify the version of installed Java.# java -versionjava version "1.7.0_75"OpenJDK Runtime Environment (IcedTea 2.5.4) (7u75-2.5.4-2)OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)It’s clear from the output above that the installed version of Java is OpenJDK 1.7.0_75.2. Make a directory where you want to install Java. For global access (for all users) install it preferably in the directory /opt/java. # mkdir /opt/java && cd /opt/java3. Now it’s time to download Java (JDK) 9 source tarball files for your system architecture by going to official Java download page. For reference, we have provided the source tarball file-name, please select and download these below mentioned file only.jdk-9.0.4_linux-x64_bin.tar.gzAlternatively, you may use wget command to download file directly into the /opt/java directory as shown below.# cd /opt/java# wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" Once file has been downloaded, you may extract the tarball using tar command as shown below.# tar -zxvf jdk-9.0.4_linux-x64_bin.tar.gz5. Next, move to the extracted directory and use command update-alternatives to tell system where java and its executables are installed.# cd jdk-9.0.4/# update-alternatives --install /usr/bin/java java /opt/java/jdk-9.0.4/bin/java 100 # update-alternatives --config javaUpdate Java Alternatives6. Tell system to update javac alternatives as:# update-alternatives --install /usr/bin/javac javac /opt/java/jdk-9.0.4/bin/javac 100# update-alternatives --config javacUpdate Javac Alternatives7. Similarly, update jar alternatives as:# update-alternatives --install /usr/bin/jar jar /opt/java/jdk-9.0.4/bin/jar 100# update-alternatives --config jarUpdate Jar Alternatives8. Setting up Java Environment Variables.# export JAVA_HOME=/opt/java/jdk-9.0.4/# export JRE_HOME=/opt/java/jdk-9.0.4/jre# export PATH=$PATH:/opt/java/jdk-9.0.4/bin:/opt/java/jdk-9.0.4/jre/binSet Java Environment Variables9. Now You may

update-java-alternatives vs update-alternatives -config java

Hi,I am new to EJBCA and came across the error below. Google says its a Java Version problem,Version 55 == Java 11Version 52 == Java 8But I tried 8 and 11 (also17 and 21) making sure java and javac have the same version. But the error stil remains the same.any suggestions?Thanks Roland [echo][javac] /home/user01/ejbca-ce-main/modules/cesecore-common/src/org/cesecore/audit/Auditable.java:28: error: cannot access CryptoToken[javac] import com.keyfactor.util.keys.token.CryptoToken;[javac] ^[javac] bad class file: /home/user01/ejbca-ce-main/lib/x509-common-util-3.2.0.jar(com/keyfactor/util/keys/token/CryptoToken.class)[javac] class file has wrong version 55.0, should be 52.0[javac] Please remove or make sure it appears in the correct subdirectory of the classpath. You must be logged in to vote after setting JAVA_HOME explicitlyJAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.25.0.9-2.el8.x86_64it works as expected.Thanky Tomas for helping me! View full answer version 52 means Java 8, so this means that you try to build EJBCA with Java 8, while Java 11 is the minimum.If you have multiple JDKs installed you really have to make sure the rigth one is used. I.e. on Ubuntu for example you need to use "sudo update-java-alternatives".If you switch java, also always do "ant clean" to remove old leftovers. You must be logged in to vote 1 reply Thank you Tomas,I am using Java 11[user01@ ejbca-ce-main]$ java -versionopenjdk version "11.0.25" 2024-10-15 LTSOpenJDK Runtime Environment (Red_Hat-11.0.25.0.9-1) (build 11.0.25+9-LTS)OpenJDK 64-Bit Server VM (Red_Hat-11.0.25.0.9-1) (build 11.0.25+9-LTS, mixed mode, sharing)[user01@ ejbca-ce-main]$ javac -versionjavac 11.0.25and I calling: ant clean deployearBut the error still remains.Update: I double checked the alternatives: both java and javac are correct Can you print the first "display-properties" part that shows up when doing "ant build". You must be logged in to vote 4 replies you probably looking for this one[echo] java.version(ant.java) = 1.8.0_432 (1.8)did not recognized it before ... and where does it come from? have you run "update-java-alternatives" to switch java implementation or do you just update that local path? under RHEL ist "alternatives" and it looks like this ...[user01@ejbca-ce-main]$ sudo alternatives --config javaSelection Command1 java-17-openjdk.x86_64 (/usr/lib/jvm/java-17-openjdk-17.0.13.0.11-3.el8.x86_64/bin/java)2 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.432.b06-2.el8.x86_64/jre/bin/java)3 java-21-openjdk.x86_64 (/usr/lib/jvm/java-21-openjdk-21.0.5.0.10-3.el8.x86_64/bin/java)4 java-latest-openjdk.x86_64 (/usr/lib/jvm/java-23-openjdk-23.0.0.0.37-1.rolling.el8.x86_64/bin/java)5 java-11-openjdk.x86_64 (/usr/lib/jvm/java-11-openjdk-11.0.25.0.9-2.el8.x86_64/bin/java)so it means even I have run alternatives and select Java11, Java8 ist still active. :-OI will try to remove Java8 ... keep you posted Even when Java8 is no longer in the alternatives listSelection Command*+ 1 java-11-openjdk.x86_64 (/usr/lib/jvm/java-11-openjdk-11.0.25.0.9-2.el8.x86_64/bin/javac)2 java-17-openjdk.x86_64 (/usr/lib/jvm/java-17-openjdk-17.0.13.0.11-3.el8.x86_64/bin/javac)3 java-21-openjdk.x86_64 (/usr/lib/jvm/java-21-openjdk-21.0.5.0.10-3.el8.x86_64/bin/javac)4 java-latest-openjdk.x86_64 (/usr/lib/jvm/java-23-openjdk-23.0.0.0.37-1.rolling.el8.x86_64/bin/javac)property is still set[echo] java.version(ant.java) = 1.8.0_432 (1.8)and error remainsI'll keep on searching where this is being set ... keep you posted after setting JAVA_HOME explicitlyJAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.25.0.9-2.el8.x86_64it works as expected.Thanky Tomas for helping me! You must be logged in to vote

Java Faker Alternatives - Java Fixtures - LibHunt

And very reliable that pretty much everyone in the known universe uses it, often without knowing what it is or what it’s doing. Con's: Microsoft Windows doesn’t come with Java built-in so you will have to get it from a third-party supplier. Just make sure you get the genuine Sun Microsystems version of Java Runtime Environment.Conclusion: It’s hard to see how anyone could use a computer or smart phone without Java Runtime Environment. It’s the oil on the wheels of the majority of web-based applications and few programmes will run on the internet without it. There are other alternatives out there, but for most end-users, Java Runtime is pretty unbeatable. It’s free, it works and almost everyone in the known universe with a computer or phone has it.Java Se Binary Jdk 8u60Java Runtime Environment Editor's ReviewJava Runtime Environment is an essential piece of software for pretty much any computer. Often called the Java Virtual Machine, it’s a vital layer of invisible technology that helps you to run a whole gamut of Java web-based applications. It comes as standard with some operating systems, so you may just need to upgrade.Allegedly, there are almost one billion downloads of Java Runtime per year and it’s reputed to be on three billion mobile phones. For most end-users, this software gives them everything they need without them having to think about it.Programmers and other specialists may find more to gripe about. And there are some questions about Java’s fitness for future app development. Depending on its ability to flex to meet future requirements, some of its competitors may finally get a crack of the whip.Pro's: World domination. Java Runtime Environment is so easy to use and very reliable that pretty much everyone in the known universe uses it, often without knowing what it is or what it’s doing. Con's: Microsoft Windows doesn’t come with Java built-in so you will have to get it from a third-party supplier. Just make sure you get the genuine Sun Microsystems version of Java Runtime Environment.Conclusion: It’s hard to see how anyone could use a computer or smart phone without Java Runtime Environment. It’s the oil on the wheels of the majority of web-based applications and few programmes will run on the internet without it. There are other alternatives out there, but for most end-users, Java Runtime is pretty unbeatable. It’s free, it works and almost everyone in the known. Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java-alternatives updates all alternatives belonging to one runtime or development kit for the Java language.

The Wannabe Java Rockstar: Alternatives to Java Native

Question What are the most effective alternatives to dex2jar and JD-GUI for Java decompilation tasks? Answer When dealing with Java decompilation, developers often seek reliable tools to convert bytecode back to readable Java source code. While dex2jar and JD-GUI are popular options, many alternatives exist that can enhance or streamline this process. This guide explores some of the best alternatives, highlighting their features and use cases. Causes Need for better instrumentation and analysis of bytecode. Desire for modern tools that offer additional functionalities. Requirements for a user-friendly interface and improved performance. Solutions **CFR**: A powerful Java decompiler that can handle modern Java constructs better than many alternatives. It is actively maintained and frequently updated to support the latest Java versions. **Procyon**: Another excellent alternative that excels in decompiling complex constructs, especially Lambda expressions and Java 8 features. Procyon also provides robust support for Java 9+ features. **Fernflower**: A highly optimized decompiler that integrates seamlessly with the IntelliJ IDEA environment, making it a great option for Java developers. ** JADX**: Primarily aimed at Android applications, this tool converts .dex files back into Java source code and has a clean graphical interface, making it easy to navigate the decompiled code. Common Mistakes Mistake: Assuming all decompilers produce identical results. Solution: Different decompilers may handle certain constructs differently, so it’s best to test multiple tools to find the one that produces the most readable code. Mistake: Not checking for updates regularly. Solution: Ensure you are using the latest versions of your chosen decompiler for the best features and compatibility with the latest Java releases. Helpers dex2jar alternative JD-GUI alternative Java decompilation tools CFR, Procyon, Fernflower, JADX Related Questions

A keytool alternative for java. - java-ssl-tools

Make sure that Java 1.8 64-bit is installed on your client system. See Installing the Java Runtime Environment.Follow these steps to install the client tools on an Ubuntu, Debian, or CentOS Linux client system:Download the package for your client operating system from the Yellowbrick Manager. Go to Support > Drivers and Tools > Client Tools.If necessary, copy the downloaded package to the client system.From the client directory where the download file was copied, run the appropriate installation commands, which must be run as sudo:Ubuntu 18.04 LTS, 20.04 LTS, 22.04 LTS: Install the ybtools package:$ sudo apt-get install ./ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.debwhere the package name is ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.deb in this example.RHEL/CentOS 7.0, 8.0, 9.0:Remove the old version of ybtools:$ sudo yum remove ybtoolsInstall the new ybtools package:$ sudo yum install ybtools-6.1.2-a8363b32.1234.el7.x86_64.rpmwhere the package name is ybtools-6.1.2-a8363b32.1234.el7.x86_64.rpm in this RHEL 7.0 example.For example, the following installation was run on an Ubuntu 16 client system:$ sudo apt-get install ./ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.deb Reading package lists... DoneBuilding dependency tree Reading state information... DoneNote, selecting 'ybtools' instead of './ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.deb'The following packages were automatically installed and are no longer required: bsh libasm3-java libganymed-ssh2-java libisl13 libjackrabbit-java libjline-java libjna-java libjna-jni libjna-platform-java libjsch-agent-proxy-java libjsoncpp0v5 liblldb-3.8 libllvm3.8 libmaven-scm-java libnetbeans-cvsclient-java libruby2.2 libsisu-guice-java llvm-3.8 llvm-3.8-dev llvm-3.8-runtime nagios-plugins-common python3-bcdoc ruby2.1-devUse 'sudo apt autoremove' to remove them.The following packages will be upgraded: ybtools1 upgraded, 0 newly installed, 0 to remove and 346 not upgraded.Need to get 0 B/185 MB of archives.After this operation, 0 B of additional disk space will be used.Get:1 /home/brumsby/ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.deb ybtools amd64 6.1.12-7a4d6a43.3360 [185 MB](Reading database ... 229176 files and directories currently installed.)Preparing to unpack .../ybtools-6.1.12-7a4d6a43.3360.ubuntu.20.04.x86_64.deb ...Unpacking ybtools (6.1.12-7a4d6a43.3360) over (5.4.0-20220620182315) ...Setting up ybtools (6.1.12-7a4d6a43.3360) ...update-alternatives: setting up automatic selection of ybbackupupdate-alternatives: using /opt/ybtools/bin/ybbackup to provide /usr/bin/ybbackup (ybbackup) in auto modeupdate-alternatives: setting up automatic selection of ybbackupctlupdate-alternatives: using /opt/ybtools/bin/ybbackupctl to provide /usr/bin/ybbackupctl (ybbackupctl) in auto modeupdate-alternatives: setting up

Java Visualvm alternatives /JVisualVM alternative/jvisual alternative

Verify the Java version again, to confirm.# java -versionjava version "9.0.4"Java(TM) SE Runtime Environment (build 9.0.4+11)Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)Suggested: If you are not using OpenJDK (open source implementation of java), you may remove it as:# yum remove openjdk-* [On CentOs/RHEL]# apt-get remove openjdk-* [On Debian/Ubuntu]Enable Java Support in Firefox10. To enable Java 9 JDK Support in Firefox, you need to run following commands to enable Java module for Firefox.On Debian, Ubuntu and Mint# update-alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /opt/java/jdk-9.0.4/lib/libnpjp2.so 20000On RHEL, CentOS and Fedora# alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /opt/java/jdk-9.0.4/lib/libnpjp2.so 2000011. Now verify the Java support by restarting Firefox and enter about:plugins on the address bar. You will get similar to below screen.Java 8 Support in FirefoxThat’s all for now. Hope this post of mine will help you in setting oracle Java, the easiest way. I would like to know your view on this. Keep connected, Stay tuned! Like and share us and help us get spread.

update-java-alternatives vs update-alternatives -config java - Ask Ubuntu

Configuring JavaYou can configure which version is the default for use in the command line by using update-alternatives, which manages which symbolic links are used for different commands.sudo update-alternatives --config javaThe output will look something like the following.There are 5 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status------------------------------------------------------------* 0 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 auto mode 1 /usr/lib/jvm/java-6-oracle/jre/bin/java 1 manual mode 2 /usr/lib/jvm/java-7-oracle/jre/bin/java 2 manual mode 3 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode 4 /usr/lib/jvm/java-8-oracle/jre/bin/java 3 manual mode 5 /usr/lib/jvm/java-9-oracle/bin/java 4 manual modePress to keep the current choice[*], or type selection number:You can now choose the number to use as a default. This can also be done for other Java commands, such as the compiler (javac), the documentation generator (javadoc), the JAR signing tool (jarsigner), and more. You can use the following command, filling in the command you want to customize.sudo update-alternatives --config commandSetting the JAVA_HOME Environment VariableMany programs, such as Java servers, use the JAVA_HOME environment variable to determine the Java installation location. Copy the path from your preferred installation and then open /etc/environment using Sublime Text or your favourite text editor.sudo subl /etc/environmentAt the end of this file, add the following line, making sure to replace the highlighted path with your own copied path.JAVA_HOME="/usr/lib/jvm/java-8-oracle"Save and exit the file, and reload it: source /etc/environment.You can now test whether the environment variable has been set by executing the following command: echo $JAVA_HOME. This will return the path you just set.. Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java-alternatives updates all alternatives belonging to one runtime or development kit for the Java language. Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java

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A protocol that allows you to download and run Java applications from the web. It is similar to Java Web Start, but it is not as widely supported.[Appletviewer]( Appletviewer is a tool that allows you to run applets locally on your computer. It is a good option for testing applets, but it is not a good option for deploying applets to users.[HTML5 Canvas]( HTML5 Canvas is a web API that allows you to draw graphics on a web page. It is a good alternative to applets for creating simple graphics, but it is not as powerful as applets.4. How to migrate from java.applet.applet to the alternatives?Migrating from java.applet.applet to the alternatives can be a complex process, but it is generally straightforward. The following steps provide a general overview of the process:1. Identify the applets that you need to migrate. This will help you determine which alternatives are appropriate for your needs.2. Evaluate the alternatives to java.applet.applet. Consider the features and capabilities of each alternative, and choose the one that is the best fit for your needs.3. Develop a migration plan. This plan should include the steps that you need to take to migrate your applets to the alternatives.4. Implement the migration plan. This may involve updating your code, testing your applets, and deploying them to your users.5. Monitor the migration. This will help you identify any problems that may arise, and it will allow you to make adjustments to your migration plan as needed.The following resources provide more information on migrating from java.applet.applet to the alternatives:[Java Web Start Migration Guide]( This guide provides information on migrating applets to Java Web Start.[JNLP Migration Guide]( This guide provides information on migrating applets to JNLP.[Appletviewer Migration Guide]( This guide provides information on migrating applets to Appletviewer.[HTML5 Canvas Migration Guide]( This guide provides information on migrating applets to HTML5 Canvas.Java.applet.applet is deprecated and marked for removal. There are a number of alternatives to java.applet.applet, including Java Web Start, JNLP, Appletviewer, and HTML5 Canvas. Migrating from java.applet.applet to the alternatives can be a complex process, but it is generally straightforward. By following the steps in

An alternative of SQLite for Java Programmer

That is safe to run on untrusted websites.Why is java.applet.applet deprecated?There are a number of reasons why the `java.applet.Applet` class is deprecated. These include:Security: Applets are executed in a sandbox, which is a restricted environment that prevents them from accessing the local file system, the network, or other system resources. This makes it difficult to write applets that are safe to run on untrusted websites.Vulnerabilities: Applets have been the target of a number of security vulnerabilities over the years. These vulnerabilities have allowed attackers to exploit applets to steal user data, install malware, and take control of computers.Lack of support: Applets are no longer supported by major web browsers, such as Chrome, Firefox, and Safari. This means that applets will not work on these browsers.As a result of these factors, the `java.applet.Applet` class is no longer considered to be a secure or reliable way to distribute code. It is recommended that you use JavaScript instead of applets to add interactivity to your web pages.The `java.applet.Applet` class is a deprecated class in the Java programming language. It was originally introduced in Java 1.0 and was used to create applets, which are small programs that can be embedded in web pages. However, applets are no longer considered to be a secure or reliable way to distribute code. As a result, the `java.applet.Applet` class is deprecated and marked for removal.It is recommended that you use JavaScript instead of applets to add interactivity to your web pages. JavaScript is a client-side scripting language that runs in the web browser, so it does not need to be executed in a sandbox. This makes it much easier to write JavaScript code that is safe to run on untrusted websites.3. What are the alternatives to java.applet.applet?There are a number of alternatives to java.applet.applet, including:[Java Web Start]( Java Web Start is a technology that allows you to download and run Java applications from the web. It is a more secure and reliable alternative to applets, and it does not require users to have a Java Runtime Environment (JRE) installed on their computers.[JNLP]( Java Network Launching Protocol (JNLP) is. Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java-alternatives updates all alternatives belonging to one runtime or development kit for the Java language. Use update-java-alternatives to update java version. Alternative, a dedicate command update-java-alternatives can also be used to switch java version. update-java

Java Alternatives: The Most Popular Java

Install Java JDK 18 on LinuxJava 18 (Non-LTS) is the latest and current release for the Java SE platform. This newest release includes JDK 18, which provides a development environment for building applications using the Java programing language and testing and running the Java programs.READ: Java SE 18 Release NotesHere, we will see how to install Java JDK 18 on Linux.Install Oracle Java JDK 18 on CentOS / RHEL / Rocky Linux & FedoraFirst, switch to the root user if required.sudo su -Then, download Oracle Java JDK 17 using the wget command in the terminal.curl -O then, install Oracle Java JDK 18 using the rpm command.rpm -ivh jdk-18_linux-x64_bin.rpmInstall Oracle Java JDK 18 on Ubuntu / DebianInstall the below dependencies for Oracle Java JDK.sudo apt updatesudo apt install -y libc6-x32 libc6-i386But, first, download Oracle Java JDK 18 using the wget command in the terminal.wget install Oracle Java JDK 18 using the dpkg command.sudo dpkg -i jdk-18_linux-x64_bin.debIn some cases, you may need to install Oracle JDK 18 on the PATH location.sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-18/bin/java 1Verify Java JDK InstallationAfter the installation of Java, use the below command to verify the version.java -versionOutput:java version "18.0.1" 2022-04-19Java(TM) SE Runtime Environment (build 18.0.1+10-24)Java HotSpot(TM) 64-Bit Server VM (build 18.0.1+10-24, mixed mode, sharing)ConclusionThat’s All. I hope you have learned how to install Java JDK 18 on Linux.