从命令行运行java类

我有java类文件 main1.class ,输入哪个代码 main1.java :

package m;

public class main1 {
     
    public static void main(String[] args) 
    {
    System.out.println("*** start ***");    
    }
}

试图逃跑

尝试1:

java -cp . main1

出现错误:

Error: Could not find or load main class main1
Caused by: java.lang.NoClassDefFoundError: m/main1 (wrong name: main1)

尝试2:

java -cp . m.main1

出现错误:

Error: Could not find or load main class m.main1
Caused by: java.lang.ClassNotFoundException: m.main1