当我使用从这里下载的guava库时,我目前面临
java.lang.NoClassDefFoundError：com.google.common.collect.HashBiMap的问题：
http://code.google.com/p/guava-libraries/
http://code.google.com/p/guava-libraries/
我已经将guava-12.0.jar添加到我的项目中作为参考库但我仍然得到错误.你能就这个问题提出一些建议吗？谢谢您的帮助
package my.project;
import android.app.Activity;
import android.os.Bundle;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
public class MainActivity extends Activity{
private BiMap<String,String> bidiMap;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.bible_help_cal);
bidiMap = HashBiMap.create();
bidiMap.put("a","100");
bidiMap.put("b","200");
}
}
我得到的错误消息
05-29 18:35:19.737: E/AndroidRuntime(376): FATAL EXCEPTION: main 05-29 18:35:19.737: E/AndroidRuntime(376): java.lang.NoClassDefFoundError: com.google.common.collect.HashBiMap 05-29 18:35:19.737: E/AndroidRuntime(376): at my.project.MainActivity.onCreate(MainActivity.java:18) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.os.Handler.dispatchMessage(Handler.java:99) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.os.Looper.loop(Looper.java:132) 05-29 18:35:19.737: E/AndroidRuntime(376): at android.app.ActivityThread.main(ActivityThread.java:4025) 05-29 18:35:19.737: E/AndroidRuntime(376): at java.lang.reflect.Method.invokeNative(Native Method) 05-29 18:35:19.737: E/AndroidRuntime(376): at java.lang.reflect.Method.invoke(Method.java:491) 05-29 18:35:19.737: E/AndroidRuntime(376): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 05-29 18:35:19.737: E/AndroidRuntime(376): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 05-29 18:35:19.737: E/AndroidRuntime(376): at dalvik.system.NativeStart.main(Native Method)
解决方法
此错误表示该类在编译时可用,但在运行时无法找到.当编译时类路径与运行时类路径不同时,最常发生这种情况.
您的运行时类路径很可能不包含番石榴罐.要验证这一点,请在代码中尝试printing your classpath.
在命令行中,您可以使用：
java -cp“path / to / guava.jar”MyMainClass
或者,设置CLASSPATH环境变量以包含jar.
