Class 存在但说 "java.lang.ClassNotFoundException"

Question

我正在尝试在 macOS 终端上编译运行一个基本的 hello word java 程序，它编译成功但是当我运行它时，它说 java.lang.ClassNotFoundException: Main.之前还可以，突然就不行了。

Hello.java

class Main {
    public static void main(String[] args) {
        System.out.println("hello");
    }
}

~/.zshrc

export PATH=/usr/local/opt/openjdk/bin:$PATH
export CLASSPATH=$PWD/activation-1.1.jar:/usr/local/opt/openjdk/plugins/javax.mail.jar

终端机

arghadip@Mac % rm *.class; ls; javac Hello.java; ls; java Main;
Hello.java
Hello.java  Main.class
Error: Could not find or load main class Main
Caused by: java.lang.ClassNotFoundException: Main
arghadip@Mac %

我用 brew install java 安装了 java。出了什么问题？

Answer 1

与其尝试运行 Main.class

就这样：java Hello.java

Class 存在但说 "java.lang.ClassNotFoundException"

Class exists but says "java.lang.ClassNotFoundException"

java

terminal

jar

zshrc

macos-big-sur