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JAVA EXAMPLE PROGRAMS

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Unable to install Java 7 in Eclipse on Mac OS


I installed Java 7 on my Mac, and tried to update Java 7 in my Eclipse application build path. After adding the jdk configuration, Eclipse was throwing below error:

Build path entry is missing: org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7

To address this problem, open your terminal and run below commands. After running these commands, restart your Eclipse and set Java 7 in your application build path.

cd /Library/Java/JavaVirtualMachines
sudo ln -s `pwd`/JDK\ 1.7.0\ Developer\ Preview.jdk/Contents/Home jdk-1.7.0

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Knowledge Centre
Class, Constructor and Primitive data types
Class is a template for multiple objects with similar features and it is a blue print for objects. It defines a type of object according to the data the object can hold and the operations the object can perform. Constructor is a special kind of method that determines how an object is initialized when created. Primitive data types are 8 types and they are: byte, short, int, long, float, double, boolean, char.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected] or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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