Android 用三个线程依次打印10个abc的算法题

面试题 ： 要求有三个线程打印10个abc A线程打印A B线程打印B C线程打印C 依次打印10个ABC

第一种方法:

import android.util.Log;

public class TwoObjectThread implements Runnable {
   
    private final static int COUNT = 10;
    private Object mFontObject;
    private Object mThisObject;
    private String mStr;
    public TwoObjectThread(Object fontObject,Object thisObject,String str){
   
        this.mFontObject = fontObject;