Java 使用3个队列分别保留手机最近10个“未接来电”、“已接来电”、“以拨电话”。

可以使用Java的Queue接口实现这个功能，具体实现如下：

import java.util.LinkedList;
import java.util.Queue;

public class PhoneCallHistory {
    private Queue<String> missedCalls;
    private Queue<String> receivedCalls;
    private Queue<String> dialedCalls;

    public PhoneCallHistory() {
        missedCalls = new LinkedList<>();
        receivedCalls = new LinkedList<>();
        dialedCalls = new LinkedList<>();
    }

    public void addMissedCall(String phoneNumber) {
        missedCalls.offer(phoneNumber);
        if (missedCalls.size() > 10) {
            missedCalls.poll();
        }
    }

    public void addReceivedCall(String phoneNumber) {
        receivedCalls.offer(phoneNumber);
        if (receivedCalls.size() > 10) {
            receivedCalls.poll();
        }
    }

    public void addDialedCall(String phoneNumber) {
        dialedCalls.offer(phoneNumber);
        if (dialedCalls.size() > 10) {
            dialedCalls.poll();
        }
    }

    public void printHistory() {
        System.out.println("Missed calls:");
        for (String phoneNumber : missedCalls) {
            System.out.println(phoneNumber);
        }
        System.out.println("Received calls:");
        for (String phoneNumber : receivedCalls) {
            System.out.println(phoneNumber);
        }
        System.out.println("Dialed calls:");
        for (String phoneNumber : dialedCalls) {
            System.out.println(phoneNumber);
        }
    }
}

在上面的代码中，我们定义了一个`PhoneCallHistory`类，它有三个队列，分别用于保存未接来电、已接来电和以拨电话。我们使用`addMissedCall`、`addReceivedCall`和`addDialedCall`方法来添加电话记录，每个方法都会将电话号码加入相应的队列中，并且如果队列的大小超过10，就会把队列头部的元素删除。最后，我们使用`printHistory`方法来打印所有的电话记录。