使用批处理文件设置类路径和路径后，仍然引发错误“找不到或加载主类”

Question

Ever since I moved the location of the file, the batch file doesn't seem to want to find the class path. I've tried set path="C:\\Program Files\\Java\\jdk1.8.0_131\\bin"; and set classpath="C:\\Program Files\\Java\\jdk1.8.0_131\\lib" .

Here's the batch file:

@echo off
color 3
title Run Java File

set path="C:\Program Files\Java\jdk1.8.0_131\bin";
set classpath="C:\Program Files\Java\jdk1.8.0_131\lib";

cd C:\Users\user\Documents\Java Test Files\Matthew C\src\calculator

javac Math.java
java Math

pause

and the calculator.java file is just a simple "Hello World" type program - which works within a built-in compiler that I use - that is Eclipse.

Does anyone know why this doesn't work? I've tried searching multiple answers in and out of Stackoverflow, and none of them seemed to have worked for me. Thanks!

Answer 1

Here's a few things to try...

1. Try running those commands on command prompt and make sure they work.
2. Try double-quoting your path to the app (it has spaces in it).
3. Set JDK path once for the entire system ( like specified here )