mac下使用java命令直接执行类文件（找不到或无法加载主类）

1.美图

2.背景

写了一个helo word

编译执行

[lcc@lcc-2 ~/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java/com/java/book/jvm/chapter11]$ javac HelloWord.java 
[lcc@lcc-2 ~/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java/com/java/book/jvm/chapter11]$ java HelloWord
错误: 找不到或无法加载主类 HelloWord

但是如果你想直接通过java命令行运行main方法的时候，这里又跟win下不一样,在win下直接通过javac Test4.java然后直接java Test4就可以了，但是mac下好像不一样，mac下回报错”找不到或无法加载主类”，

后来这样做就可以了

[lcc@lcc-2 ~/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java/com/java/book/jvm/chapter11]$ cd /Users/lcc/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java
[lcc@lcc-2 ~/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java]$ java -cp . com.java.book.jvm.chapter11.HelloWord
hello world
[lcc@lcc-2 ~/IdeaProjects/lcc_work/test-java/java-v8-book-jvm-v1/src/main/java]$