...
[INFO] --- gwt-maven-plugin:2.10.0:compile (default) @ zhstregisterjp-web ---
[INFO] Compiling module ch.zh.ksta.zhstregisterjp.ZHStRegisterJPWebDevelopment
[INFO] Ignored 5 units with compilation errors in first pass.
[INFO] Compile with -strict or with -logLevel set to DEBUG or WARN to see all errors.
[INFO] Ignored 14 units with compilation errors in first pass.
[INFO] Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
[INFO] Errors in com/google/gwt/emul/java/lang/Throwable.java
[INFO] [ERROR] Line 344: 'Throwable.HasJavaThrowable' has invalid name '?'.