I've recently updated my GWT project to 2.6.1, and started to make use of
Java 7 syntax since 2.6 now supports Java 7.
However, when I attempt to compile, I'm receiving compiler errors such as
[ERROR] Line 42: '<>' operator is not allowed for source level below 1.7
Full output
Compiling module com.Project
Validating units:
Ignored 85 units with compilation errors in first pass.
Compile with -strict or with -logLevel set to TRACE or DEBUG to see all
errors.
Computing all possible rebind results for
'com.google.gwt.useragent.client.UserAgentAsserter'
Rebinding com.google.gwt.useragent.client.UserAgentAsserter
Checking rule <generate-with
class='com.google.gwt.editor.rebind.SimpleBeanEditorDriverGenerator'/>
[WARN] Detected warnings related to
'com.google.gwt.editor.client.SimpleBeanEditorDriver'. Are
validation-api-<version>.jar and validation-api-<version>-sources.jar on
the classpath?
Specify -logLevel DEBUG to see all errors.
[WARN] Unknown type
'com.google.gwt.editor.client.SimpleBeanEditorDriver' specified in deferred
binding rule
[ERROR] Errors in
'file:/C:/workspace/Project/src/com/project/ProjectFile.java'
[ERROR] Line 42: '<>' operator is not allowed for source level
below 1.7
[ERROR] Errors in
'file:/C:/workspace/Project/src/com/project/AnotherProjectFile.java'
[ERROR] Line 188: Cannot switch on a value of type String for
source level below 1.7. Only convertible int values or enum variables are
permitted
C:\workspace\Project\build.xml:51: Java returned: 1
at org.apache.tools.ant.taskdefs.Java.execute(Java.java:111)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.Main.runBuild(Main.java:809)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.Main.start(Main.java:180)
at org.apache.tools.ant.Main.main(Main.java:268)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30)
C:\workspace\Project\build.xml:51: Java returned: 1
at org.apache.tools.ant.taskdefs.Java.execute(Java.java:111)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.Main.runBuild(Main.java:809)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.Main.start(Main.java:180)
at org.apache.tools.ant.Main.main(Main.java:268)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30)
C:\workspace\Project\build.xml:51: Java returned: 1
at org.apache.tools.ant.taskdefs.Java.execute(Java.java:111)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.Main.runBuild(Main.java:809)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.Main.start(Main.java:180)
at org.apache.tools.ant.Main.main(Main.java:268)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30)
How do I specify the GWT compiler to target 1.7? I was under the impression
that it would do that by default, but I guess not. I've attempted cleaning
the project, including deleting the gwt-unitCache directory but to no avail.
Here is my Ant compile target.
<target name="compile" depends="prepare">
<javac includeantruntime="false"
debug="on"
debuglevel="lines,vars,source"
srcdir="${src.dir}"
destdir="${build.dir}"
source="7"
target="7">
<classpath refid="project.classpath"/>
</javac>
</target>
<target name="gwt-compile" depends="compile">
<java failonerror="true" fork="true"
classname="com.google.gwt.dev.Compiler">
<classpath>
<!-- src dir is added to ensure the module.xml file(s) are
on the classpath -->
<pathelement location="${src.dir}"/>
<pathelement location="${build.dir}"/>
<path refid="project.classpath"/>
</classpath>
<jvmarg value="-Xmx256M"/>
<arg value="-sourceLevel"/><arg value="7"/>
<arg value="${gwt.module.name}"/>
</java>
</target>
I've asked this question over
at
http://stackoverflow.com/questions/23958028/compiling-gwt-2-6-1-at-java-7-source-level
but I've yet to find a solution. I'm hoping I would have better luck here?
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/google-web-toolkit.
For more options, visit https://groups.google.com/d/optout.
