Newest post on how to install Oracle JDK 8 / Java SE 8 on Mac OS X 10.10 Yosemite can be found here.
At the time of this writing, there is no official release of Java SE 7 / Oracle JDK 1.7 on Mac OS X. It is still in developer preview based on Apple’s contributions to OpenJDK. The Developer Preview is provided to the community so that the developers can get feedback on the ongoing progress of the project. The developer preview should work on any Intel-based Mac and has been tested on Mac OS X 10.6.8 (Snow Leopard) and 10.7 (Lion).
Mac OS X Port Project. The goal of this Project is to produce a high-quality, open source version of JDK 7 for the Mac. The final release has the following goals: Pass all appropriate certification tests for Java SE 7; Include a complete, native Cocoa-based UI Toolkit; Provide excellent performance; This Project is sponsored by the Porters. Java manual download page. Get the latest version of the Java Runtime Environment (JRE) for Windows, Mac, Solaris, and Linux. Drag Java SE 7 to the top. It will now be your default JVM. Run java -version again, and you should see something like: java version '1.7.004' Java(TM) SE Runtime Environment (build 1.7.004-bxx) Java HotSpot(TM) 64-Bit Server VM (build 23.0-b17, mixed mode) Once this is complete, a new install of Eclipse should select JDK7 by default. Oracle has finally released Java 7 and JDK 7 for developers. This is the first major update after Oracle acquired Sun Micro Systems. And it came after a lot of time but there has been a huge improvement in features and a lot of bugs have been fixed.
UPDATE
Version 7 Release 1 Contains a later version of the IBM virtual machine when compared to IBM SDK, Java Technology Edition, Version 7, while remaining compatible with Java SE 7 application programming interfaces (APIs).
Oracle has launched the official Java SE 7 for Mac OS X 64-bit platform. You can download it from here.
This tutorial shows you how to install Java SE 7 Developer Preview on Mac OS X 10.7.2 Lion running on my MacBook Pro.
1. Download the Oracle JDK7 Mac OS X port dmg file from here. At the time of this writing, the version of the JDK7 is Oracle JDK7 build b223 released on December 23, 2011. The dmg file name is jdk-7-ea-macosx-b223.dmg
2. Create a JavaVirtualMachines folder under /Library/Java if it doesn’t exist.
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In my case, the JavaVirtualMachines is already there so I don’t need to create it manually.
3. Open the jdk-7-ea-macosx-b223.dmg file by double-clicking on it. Then drag the JDK 1.7.0 Developer Preview icon in the left side to the JavaVirtualMachines icon folder in the right side.
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4. Go to /Library/Java/JavaVirtualMachines directory using Finder application. Then double-click the ‘JDK 1.7.0 Developer Preview’ icon. This will open the Java Preferences window. Here you can change the preferred order of the installed Java platforms by dragging it up or down. Make sure the Java SE 7 is in the preferred order or you can simply deselect the Java SE 6 version.
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5. Now issue the ‘java -version’ command in the terminal window to verify.
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6. Done