classnotfound

问题 I have recently upgraded my ADT to version 22. After I have done so, I first received an error with my support library (which was relied on another library project). After I have copied the support library to my project and cleaned all my projects, I keep receiving the following errors when I try to launch my application: java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.d.d/com.d.d.MainActivity}: java.lang.ClassNotFoundException: com.d.d.MainActivity (I have

问题 I have installed two jdks - jdk 1.5 and jdk 1.8. I have following Ant build.xml config file : <target name=\"compileCustomSrc\"> <javac srcdir=\"src\" destdir=\"build/classes\" source=\"1.5\" target=\"1.5\" > <classpath> <fileset dir=\"C:/lib/\"> <include name=\"*.jar\" /> </fileset> </classpath> </javac> </target> Before installing jdk1.8, Ant invoked from Eclipse compiled all sources successful. But now, I have following error message: Class not found: javac1.8 My JAVA_HOME and JRE_HOME: