[Java] Erro

[WanHelsing]

Boa Tarde é que eu estou querendo da build numa rev que compilei e quando vou da build ele da esse erro.

C:\Compiler\L2JBeta_CommunityServer\build.xml:80: Java 1.6.0 is required. But your version is Java 1.6 and probably JDK is not installed.

Preciso dessas configurações abaixo já configuradas:

<target name="checkRequirements" description="Check Requirements">
<fail message="Ant 1.7.1 is required. But your version is ${ant.version}">
<condition>
<not>
<antversion atleast="1.7.1" />
</not>
</condition>
</fail>
<available classname="java.lang.AutoCloseable" property="JDK7.present" />
<fail unless="JDK7.present" message="Java 1.7 is required. But your version is Java ${ant.java.version} and probably JDK is not installed." />
</target>