An error “you need to install the legacy Java SE 6 runtime”, is encountered when you open any Adobe application.

'Java for Mac OS X 10.5 Update 1 has apparently broken 'Power E.Trade Pro'. When starting it on my iMac Core 2 Duo (10.5.2), I now get the message 'Java Starting' followed by 'Failed to validate. Java/Mac OS X FAQ: Where are Java Preferences stored on Mac OS X? The preferences you store from within a Java application on a Mac OS X system are saved in a file in the user's /Library/Preferences directory. For instance, for a Mac user named Alvin, and a Java class named com.devdaily.Foo, preferences for that class will be stored in this file.

With Mac OS 10.7 (Lion) and later, the Java runtime is no longer installed automatically as part of the OS installation. Follow any of the methods below to install Java runtime.

You can download and install the latest Java runtime from the Java website - Download Free Java Software.

Note:

On Mac OS 10.10 (Yosemite), when you launch any Adobe product, you might receive a warning 'The Application has been moved and its path has been changed...'.

Click Repair Now or Update button to update the location and resolve the issue. When prompted for password, enter your system password to complete.

If Java runtime is not installed, you are prompted to install when you first launch any Adobe product. Follow the onscreen instructions in the Java required notification dialog box to install.

Use the following method to initiate the Java runtime installation or confirm if it is installed.

Go to Applications > Utilities > Java Preferences.

If Java is not installed, you receive the following message: “To open “Java Preferences,' you need a Java runtime. Would you like to install one now?”

Click Install and accept the license agreement. The Java runtime is downloaded and installed.

Many Adobe applications depend on the Oracle Java Runtime Environment (JRE) for some features to work. Apple recently changed the way it includes Java in Mac OS, and with Lion, Java is no longer preinstalled. It is now an optional install that you must select.

Since current Adobe installers and applications were built before these changes by Apple, Adobe software anticipates that Java is installed. Adobe and Apple have worked together to ensure that you can install Java at OS install time. Or it can be installed later before you install Adobe applications. At runtime, when you launch an Adobe application, you are prompted to install Java if it is not already installed. If you do not install Java before running an Adobe application, there can be missing or improperly behaving features. If you encounter any issues, install Java to correct the problems. Adobe recommends that corporate IT organizations pre install Java (or make sure that Java can be installed through their firewalls/security) to avoid conflicts with Adobe applications.

If the Java runtime is not installed, some issues that are known to occur include -

Failure to launch.
Install Java runtime prompts when you attempt to use the applications.
Applications hang or quit.

(P)Bookmarks.dev - Open source Bookmarks and Codelets Manager for Developers & Co. See our How To guides to help you get started. Share your favorites bookmarks with the community and they might get published on Github -

Well, I’ve recently gone to the “silver” side and acquired a MacBook Pro to use it for development when I am not at my PC. By development I mean here mainly Java + Javascript development. So I’ve written this post to remember what I had to install/configure to achieve this goal.

I need to mention that until now I’ve been a user of Windows (XP/7) and Linux (Ubuntu/Mint/Cent OS) operation systems.

At the time of this writing MacBook Pro runs on OS X Yosemite Version 10.10.5. The new version El Capitan was available, but I didn’t do the upgrade first because it had to many bad reviews…

Contents

JDK
Extras
- Keyboard shortcuts
- MySQL
- Terminal window

JDK

So first things first- installe a Java Development Kit (JDK), which is a software development environment used for developing Java applications and applets. It includes the Java Runtime Environment (JRE), an interpreter/loader (java), a compiler (javac), an archiver (jar), a documentation generator (javadoc) and other tools needed in Java development.

Download the Mac OS X x64 .dmg files version

You can find out where the JDK is installed, by executing the /usr/libexec/java_home -v 1.7 , on the terminal command:

You will need to know this when setting up a project in IntelliJ for example.

Set JAVA_HOME

JAVA_HOME is just a convention, usually used by Tomcat, other Java EE app servers and build tools such as Maven to find where Java lives.

In Mac OSX 10.5 or later, Apple recommends to set the $JAVA_HOME variable to /usr/libexec/java_home, just export $JAVA_HOME in file ~/.bash_profile or ~/.profile

Maven

With the JAVA_HOME environment variable configure, go to the Apache Maven Downloads website, download the .tar.gz or .zip archive and unpack it in a folder of your choice – I put it under the /opt directory:

It is also recommended to create a symbolic link to the Maven home, so that when let’s say you update your Maven version, you’ll only have to change the symbolic link target:

Then set Maven in the environment variables

Close the terminal and open a new one. When you try now to get the maven versioning you should get something like the following:

An alternative is to use Homebrew and execute the following command:

GIT

Open a terminal window and type the following command for example:

At the next moment you will be asekd to install Xcode. This is the a complete developer toolset for building apps that run on Apple TV, Apple Watch, iPhone, iPad, and Mac. It includes the Xcode IDE, simulators, and all the required tools and frameworks to build apps for iOS, watchOS, tvOS, and OS X (it also contains GNU Compiler Collection-gcc).

You can do the above, but if you do not want everything from that package you can install Homebrew (“Homebrew installs the stuff you need that Apple didn’t.”) and run the following commands:

Either way once Git is installed the initial command git –version will bring the installed version:

If you are working with Github, I recommend you also install the Github Desktop

IntelliJ

In the mean time IntelliJ has become my favorite IDE, mainly because you have almost the same feature support when doing front-end development. To install it, go to the download page and follow the installation instructions:

INSTALLATION INSTRUCTIONS

Download the idea-15.dmg OS X Disk Image file.
Mount it as another disk in your system.
Copy IntelliJ IDEA to your Applications folder

Once done you need to get acquainted with key shortcuts for OS X – IntelliJ IDEA Mac OS X Keymap

Extras

Keyboard shortcuts

General

Please visit](https://support.apple.com/en-us/HT201236) for usual keyboard shortcuts (Cut, copy, paste, and other common shortcuts, document shortcuts etc.)

Finder

Shift + cmd + C > go to Computer
Shift + cmd + H > go to Home folder
Shift + cmd + D > go to Desktop

A quick access with the mouse to the same folders is by dragging and dropping them on the sidebar under Favorites

Java 5 For Mac Os X