Urgent help :: Google App Engine remote API for java 1.5
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I'm currently trying to implement access google app engine data using remote API in websphere portal but its giving nosuchmethod error , its working fine in local with java 1.6

below is the error

Exception thrown : java.lang.NoSuchMethodError: java/lang/String.isEmpty()Z
	at com.google.appengine.tools.remoteapi.ClientLogin.getClientLoginToken(ClientLogin.java:44)
	at com.google.appengine.tools.remoteapi.ClientLogin.login(ClientLogin.java:36)
	at com.google.appengine.tools.remoteapi.RemoteApiInstaller.loginImpl(RemoteApiInstaller.java:195)
	at com.google.appengine.tools.remoteapi.RemoteApiInstaller.login(RemoteApiInstaller.java:165)
	at com.google.appengine.tools.remoteapi.RemoteApiInstaller.install(RemoteApiInstaller.java:86)

I think its because clientLogin.java has isempty method which is not supported in java1.5

I tried using app engine SDK 1.5 still same and found that it has email.isempty()
its says app engine sdk supports java1.5 and 1.6
any help is appreaciated