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Sep 16, 2017 - If it's responding with No Java runtime present, requesting install. Well, it's not installed. I believe that Apple's default installer still installs Java. Plugin check reports outdated java on mac, but apple update says it. 4, can't verify java version, whe. 4, can't verify java version, when i go to their i can't get the version of java on my mac.
The following are the system requirements for installing the JDK and the JRE on macOS:
- Any Intel-based computer running macOS.
- Administrator privileges.You cannot install Java for a single user. Installing the JDK and JRE on macOS is performed on a systemwide basis for all users. Administrator privileges are required to install the JDK and JRE on macOS.
- When you install the JDK, it also installs the JRE. However, the system will not replace the current JRE with a lower version.To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. To install an earlier version of the JRE, you must first uninstall the current version. See Uninstalling the JRE on macOS.
- When you install the JRE, you can install only one JRE on your system at a time. The system will not install a JRE that has an earlier version than the current version.To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. To install an earlier version of the JRE, you must first uninstall the current version. See Uninstalling the JRE on macOS.Note:Installing a JRE from Oracle will not update
java -version
symlinks or addjava
to your path. To do this, you must install the JDK.
How can I find which version of Java is installed without running an applet in Windows or Mac?
This article applies to:- Platform(s): Mac OS X, Windows 10, Windows 7, Windows 8, Windows Vista, Windows XP, macOS
- Java version(s): 7.0, 8.0
- in the Java Control Panel (Windows and Mac)
- in terminal window command line (Mac)
Use any of these options if you are having trouble running applets to confirm that you have a specific Java version.
Java Version under Windows Start Menu - Java 7 Update 40 (7u40) and later versions
Starting with Java 7 Update 40, you can find the Java version through the Windows Start menu.- Launch the Windows Start menu
- Click on Programs
- Find the Java program listing
- Click About Java to see the Java version
Java Version in the Java Control Panel - Windows and Mac
The Java version can be found in the Java Control Panel.
- Find the Java Control Panel on Windows
Find the Java Control Panel on Mac - Under the General tab in the Java Control Panel, the version is available through the About section. A dialog appears (after clicking About) showing the Java version.
Java Version in Windows Programs
The latest version(s) of Java on your system will be listed as Java 8 with an associated Update number (eg. Java 8 Update 111). Older versions may be listed as Java(TM), Java Runtime Environment, Java SE, J2SE or Java 2.
Windows 10
![Check For Java Mac Check For Java Mac](http://www.bu.edu/tech/files/2012/05/MacLionUpdateJava1.png)
- Click the Start button
- Scroll through the applications and programs listed until you see the Java folder
- Click on the Java folder, then About Java to see the Java version
Windows 8
- Right-click on the screen at bottom-left corner and choose the Control Panel from the pop-up menu.
- When the Control Panel appears, select Programs
- Click Programs and Features
- The installed Java version(s) are listed.
Windows 7 and Vista
- Click Start
- Select Control Panel
- Select Programs
- Click Programs and Features
- The installed Java version(s) are listed.
Windows XP
- Click Start
- Select Control Panel
- Click the Add/Remove Programs control panel icon
- The Add/Remove control panel displays a list of software on your system, including any Java versions that are on your computer.
Using the Command-line to find Java Versions - Mac
The Java Runtime (JRE) that you download from java.com or oracle.com contains a plugin to run Java content from your browser. In order to use the command line tools, you will need to download the Java Development Kit (JDK). The JRE and JDK are separate and can coexist on your system. Only one JRE can be installed on Mac. There can be multiple JDKs installed on a system, as many as you wish.
JRE Version Command Line on Mac
Type the following in a Terminal window:
/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version
Determining the Default Version of the JDK on Mac
When launching a Java application through the command line, the system uses the default JDK. It is possible for the version of the JRE to be different than the version of the JDK.
You can determine which version of the JDK is the default by typing
java -version
in a Terminal window. If the installed version is 7u55, you will see a string that includes the text 1.7.0_55
. For example:java -version
java version '1.7.0_55'
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)