很莫名的出现android HashSet_jni.h错误，查了一下基本上锁定是ｊａｖａ版本的问题，尝试切换ｊａｖａ版本无果，参考：

卸载ｊａｖａ重新安装还是一样。 

这里记录一下重装ｊｄｋ１.6的过程

１. 安装

２. 配置

update-alternatives  --install  /usr/bin/java java /usr/local/share/jvm/jdk1.6.0_45/bin/java   1888 

参考：

最后正确答案：

I have configed my javap but noting change for this error. My enviornment is (ubuntu15.04, python2.7.6, java1.6.0_45, gcc4.8.2) So I change "external/chromium_org/base/android/jni_generator/jni_generator.py", which remove the error.

diif as follows: (indent for "def MultipleReplace" is same with "class InlHeaderFileGenerator" )

--- a/base/android/jni_generator/jni_generator.py  +++ b/base/android/jni_generator/jni_generator.py  @@ -555,18 +555,24 @@ class JNIFromJavaSource(object):                                                                  contents)       return JNIFromJavaSource(contents, fully_qualified_class)  +def MultipleReplace(string, rep_dict):  +    pattern = re.compile("|".join([re.escape(k) for k in rep_dict.keys()]), re.M)  +    return pattern.sub(lambda x: rep_dict[x.group(0)], string)   class InlHeaderFileGenerator(object):     """Generates an inline header file for JNI integration."""     def __init__(self, namespace, fully_qualified_class, natives,                  called_by_natives):  -    self.namespace = namespace  -    self.fully_qualified_class = fully_qualified_class  +#    self.namespace = namespace  +#    self.fully_qualified_class = fully_qualified_class  +    self.namespace = MultipleReplace(namespace, {'
    
     ':''})  +    self.fully_qualified_class = MultipleReplace(fully_qualified_class, {'
     
      ':''})       self.class_name = self.fully_qualified_class.split('/')[-1]       self.natives = natives       self.called_by_natives = called_by_natives  -    self.header_guard = fully_qualified_class.replace('/', '_') + '_JNI'  +#    self.header_guard = fully_qualified_class.replace('/', '_') + '_JNI'  +    self.header_guard = MultipleReplace(fully_qualified_class, {'/':'_', '
      
       ':''}) + '_JNI'     def GetContent(self):       """Returns the content of the JNI binding file."""