您好请帮我解决运行java程序时出现的错误命令termux运行java程序时出现这样的错误
Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58) Caused by: java.lang.NoClassDefFoundError: org/bitcoinj/core/ECKey at btc.btc2.btc.main(btc.java:28) ... 5 more
Caused by: java.lang.ClassNotFoundException: org.bitcoinj.core.ECKey at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 6 more
请告诉我是什么原因造成的，谢谢。