Java：如何从实例对象的枚举中从类中调用方法？

Question

I made several instances of objects in a hashtable and want to call a method from each of them.

I made a for that goes through an enumeration of the values retrieved from said hashtable, but I'm unsure how to actually call the method on each object.

for(Enumeration<Agent> AgentEnum = AgentList.elements(); AgentEnum.hasMoreElements();){
        //content+=
        AgentEnum.nextElement();
    }

Content should receive the return of the method I'm trying to call from class Agent.

Answer 1

content = AgentEnum.nextElement().<your-method>();

Answer 2

Iterate over the keys in your hashmap. For example:

Enumeration<Agent> AgentEnum = AgentList.keys();
while(AgentEnum.hasMoreElements()) {
    Agent key = AgentEnum.nextElement();
    YOUR_CLASS value = AgentList.get(key);
    value.whatever();
    ...
}

EDIT

Or use the values directly:

for(YOUR_CLASS obj : AgentList.values()) {
    obj.whatever();
    ...
}

Other methods are discussed here , for example.