public class Main {
public static String getPackageName(Class c) {
String fullyQualifiedName = c.getName();
int lastDot = fullyQualifiedName.lastIndexOf('.');
if (lastDot == -1) {
return "";
}
return fullyQualifiedName.substring(0, lastDot);
}
public static void main(String[] args) {
System.out.println(getPackageName(java.awt.Frame.class));
}
}