Java 我需要知道如何在关联数组中设置值并在屏幕上显示

好的，我正在将一个IM客户端从autoit移植到java，我对java还是相当陌生的

我试图做的是创建一个2d数组，在该数组中，我可以将每个用户的对话历史记录存储在他们姓名旁边的数组中

然后我想做的是，根据需要，通过提供用户的用户名，将此聊天历史记录写入编辑控件，从而在被询问时在屏幕上显示与该用户的聊天历史记录

尝试了几种不同的代码

数组函数：

public class conversations {
    public static String[][] conversationspool = new String[100][];

    public static String[][] init() {
    for (int i = 0; i < 99; i++) {
        conversations.conversationspool[i] = new String[2];
    }
    return conversations.conversationspool;
    }

    public static String startConvo(String user) {
        for (int start = 0; start < 99; start++) {
            if (conversations.conversationspool[start][0] == user) {
                return conversations.conversationspool[start][1];
            }
        }
        for (int start = 0; start < 99; start++) {
            if (conversations.conversationspool[start][0] == "") {
                conversations.conversationspool[start][0] = user;
                conversations.conversationspool[start][1] = "<center>Conversation with " + user + "</center>";
                System.out.print(conversations.conversationspool[start][1]);
                return conversations.conversationspool[start][1];
                }
            }
    return "0";
    }

    public static String addToConvo(String user, String html) {
        for (int start = 0; start < 99; start++) {
            if (conversations.conversationspool[start][0] == user) {
                conversations.conversationspool[start][1] = conversations.conversationspool[start][1] + html;
                System.out.print(conversations.conversationspool[start][1]);
                return conversations.conversationspool[start][1];
            }
        }
        return "0";
    }

    public static String getConvo(String user) {
        for (int start = 0; start < 99; start++) {
            if (conversations.conversationspool[start][0] == user) {
                return conversations.conversationspool[start][1];
            }
        }
        return "0";
    }
}

---

我应该在编辑器窗格中显示CONVA start消息，但是无论我做什么，我都会得到数组函数的默认返回值（0）。我希望返回的数据是所提供用户的聊天历史记录的内容。

到达

return

后，该方法停止执行

//...
//array == {"no","no","yes","no","","yes",...}

for (int i = 0; i < 99; i++){
    if (array[i].equals("yes")){
      // do something
      return something;
    }
}
// this will stop at i == 2 and will not reach the end of for loop

---

==与.equals（）不同使用.equals比较字符串==

//...
//array == {"no","no","yes","no","","yes",...}

for (int i = 0; i < 99; i++){
    if (array[i].equals("yes")){
      // do something
      return something;
    }
}
// this will stop at i == 2 and will not reach the end of for loop

public static String[][] conversationspool = new String[100][2];