Eclipse uses Ant to play Android package error solution –perhaps Java_home does not point to the JDK

Problem Description:

There was an error running the Ant Bulk Packaging tool in eclipse with the following log information:
d:\android\android-sdk-windows\tools\ant\build.xml:601:the following error occurred while executing the line:
d:\android\android-sdk-windows\tools\ant\build.xml:720:the following error occurred while executing the line:
d:\android\android-sdk-windows\tools\ant\build.xml:734:unable to find a javac compiler;
Com.sun.tools.javac.Main isn't on the classpath.
Perhaps Java_home does not point to the JDK.
It is currently set to "D:\Program Files\java\jre7″

Solution:

eclipse menu –window–preferences–java–installed jres– Check the JRE item in the column table –edit–add External jars–   Select JDK Directory/lib/tools.jar  -  confirm that it joined the JRE system libraries –finish–ok

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Eclipse uses Ant to play Android package error solution –perhaps Java_home does not point to the JDK