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我在 eclipse 中创建了一个 web 项目，它工作正常，但是当我添加 Hashmap 时它给我错误 The type Java.util.Map$Entry canot be resolved。
我看到很多关于同一问题的讨论，但无法找到解决方案。有人可以帮帮我吗。
package com.balu.loginApp.bean;
import java.util.HashMap;
import java.util.Map;
public class LoginAuthenitication {
Map<String, String> users = new HashMap<String, String>();
public LoginAuthenitication()
{
users.put("balu", "Balamurali CL");
users.put("swathi", "Swathi RL");
}
public boolean loginAuthenitications(String userName, String passWord)
{
if (passWord== null || passWord.trim() == "")
{
return false;
}
else
return true;
}
堆栈跟踪
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/juli/logging/LogFactory at
org.apache.catalina.util.LifecycleBase.<clinit>(LifecycleBase.java:37)
Caused by: java.lang.ClassNotFoundException:
org.apache.juli.logging.LogFactory at
java.net.URLClassLoader.findClass(URLClassLoader.java:381) at
java.lang.ClassLoader.loadClass(ClassLoader.java:424) at
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at
java.lang.ClassLoader.loadClass(ClassLoader.java:357) ...