Java Library Location On Mac
Learn how to access the hidden Library folder in your Home folder on your Mac so you can tweak app settings and access app files.
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Inside the home folder on your Mac is a Library folder that stores app-specific files and settings, personal settings, and some data. The files and settings in the Library folder should be left alone for the most part. But, you may want to tweak the settings for an app, which may require accessing the Library folder. Or, maybe an app backs up data to the Library folder and you want to copy that to an external drive.
As of Mac OS X Lion (10.7), the Library folder in your home folder is hidden by default. That doesn’t mean you can’t get to it. It’s hidden so you don’t accidentally delete settings and data, damaging apps in the process. So, if you decide you want to access the Library folder, be very careful.
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Today we’re going to cover different ways of accessing the hidden Library folder in your home folder and how to make it permanently available in Finder.
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What is the Path to the Library Folder?
The Library in your home folder is written as ~/Library. The tilde (~) character is a shortcut for your home directory. For example, on my Mac, that would expand to /Users/lorikaufman/Library.
Access the Library Folder Using the Go to Folder Option
If you want to access the Library folder only occasionally, you can use the Go to Folder option in Finder.
Open Finder or just click on the desktop. Head to Go > Go to Folder, or hit Cmd + Shift + G.
Type:~/Library in the Go to the folder box on the dialog box and click Go or press Enter.
If you have one or more Finder windows open, the Library folder opens in the currently active window. If no Finder windows are open, a new one opens to the Library folder.
Access the Library Folder Using the Terminal
If you prefer using the command line, you can access the Library folder using the Terminal.
Go to Utilities > Terminal in the Applications folder. To access the Library folder directly in the Terminal, type:cd ~/Library at the prompt to switch to the Library folder.
You can type:ls at the prompt to get a detailed folder listing. You can work with the files in the Library folder directly on the command line. Just be careful.
You can also use the Terminal to open the Library folder in a Finder window. Type:open ~/Library at the prompt and hit Enter.
Access the Hidden Library Menu Option in Finder
The Library folder is available on the Go menu in Finder, but it doesn’t show on the menu by default.
To temporarily show the Library option on the Go menu, open the menu and press the Option key. The Library folder shows up between Home and Computer on the Go menu. Keep the Option key pressed while you move your mouse down the menu and select Library.
If you’re using a Windows keyboard with your Mac, press the Alt key.
Show the Library Folder Permanently in Finder
If you access the Library folder often, you can permanently show the Library option on the Go menu and the Library folder in your Home folder.
Open Finder and head to your Home folder using the left pane or by pressing Cmd + Shift + H. Then, go to View > Show View Options, or hit Cmd + J.
A dialog box displays with options you can set for your Home folder. Check the Show Library Folder box at the bottom of the dialog box. The Library folder now shows up in your Home folder in Finder windows and the Library option becomes permanently available on the Go menu.
When you permanently show the Library folder in Finder, you can hit Cmd + Shift + L to open it in a Finder window, in addition to selecting the Library option on the Go menu.
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Happy Tweaking, But Be Careful
The Library folder is hidden by default for a good reason. So, before tweaking settings and changing files in the Library folder, make sure you know what you’re doing.
This page describes how to install and uninstall JRE 8 on OS X computers.
Note: The JRE installation includes the JavaFX Runtime which is incorporated into the same directory structure. |
This page has these topics:
See 'JDK 8 and JRE 8 Installation Start Here' for general information about installing JDK 8 and JRE 8.
See 'OS X Platform Install FAQ' for general information about installing JRE 8 on OS X.
System Requirements
Observe these requirements:
Any Intel-based computer running OS X 10.8 (Mountain Lion) or later.
Administrator privileges.
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Note that installing the JRE on OS X is performed on a system-wide basis, for all users, and administrator privileges are required. You cannot install Java for a single user.
Only one JRE can be installed at a time. The system will not install a JRE that has a lower version than the current version. If you wish to install a lower version of the JRE, uninstall the current version as described in 'Uninstalling the JRE'.
Installing a JRE from Oracle will not update java -version symlinks or add java to your path. To be able to do this, you need to install the JDK.
JRE Downloaded File
Depending on your processor, the downloaded file has one of the following names, where version is the update number:
jre-8uversion-macosx-amd64.dmgjre-8uversion-macosx-x64.dmg
Installing JRE 8u40
If you are installing JRE 8u40, then follow these steps:
Download the file.
Before the file can be downloaded, you must accept the license agreement.
From either the Downloads window of the browser, or from the file browser, double click the file
.dmgto launch it.A Finder window appears containing an icon of an open box and the name of the
.appfile.Double click the package icon to launch the Install app.
A window appears that says, 'Java 8 Update 40 is trying to install a new helper tool. Type your password to allow this.'
Enter the Administrator login name and password and then click Install Helper.
The Install app then displays the Introduction window.
Click Next.
Oracle has partnered with companies that offer various products. The installer may present you with the option to install these programs when you install Java. Specify if you want these programs installed and then click Next.
Note:
You can disable the presentation of offers during installation by specifying the--args SPONSORS=0option in the terminal command line. For example:open /Volumes/Java 8 Update 40/Java 8 Update 40.app --args SPONSORS=0An Installation Progress window is displayed. Once the software is installed, a confirmation window appears and then an applet is launched to verify the version of Java installed.
Delete the
.dmgfile if you want to save disk space.
Determining the Installed Version of the JRE
If you have not yet installed Apple's Java OS X 2012-006 update, then you are still using a version of Apple Java 6 that includes the plug-in and the Java Preferences app. See 'Note for Users of OS X that Include Apple Java 6 Plug-in'.
Only one JRE can be installed. Installing a JRE removes the previously installed JRE. The JRE version used by the system can be determined in one of two ways:
From System Preferences click the Java icon from the Other category. This launches the Java Control Panel. Click About.
Type the following in a Terminal window (note escaped space character, ignore line break):
The system will not install a JRE that has a lower version than the current version. If you want to install a lower version, first uninstall the existing version.
Uninstalling the JRE
To uninstall the JRE, you must have Administrator privileges and execute the remove commands either as root or by using the sudo(8) tool.
Remove one directory and one file (a symlink), as follows:
Java Library Location On Mac Free
Navigate to
/Library/Internet Plug-Insand remove theJavaAppletPlugin.plugindirectory.Navigate to /
Library/PreferencePanesand removeJavaControlPanel.prefpane.
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Do not attempt to uninstall Java by removing the Java tools from /usr/bin. This directory is part of the system software and any changes will be reset by Apple the next time you perform an update of the OS.