通过批处理文件运行java程序

I want to run my java program through a .bat file. My java program is present in a bin subfolder of the java folder. My batch file is present in the batch folder.

我想通过.bat文件运行我的java程序。我的java程序存在于java文件夹的bin子文件夹中。我的批处理文件存在于批处理文件夹中。

cd..
cd java
cd bin
javac screenshot.java
java screenshot
pause

The above is the script in my batch file.The program is getting compiled, but while running i am getting:

以上是我的批处理文件中的脚本。程序正在编译,但在运行时我得到:

Error:Could not find or load main class screenshot.

Can someone tell me where i went wrong? I am stuck.

谁能告诉我哪里出错了?我被卡住了。

4 个解决方案

#1

You need to set your classpath prior to running the Java program. Also, it makes sense to combine the cd commands into one:

您需要在运行Java程序之前设置类路径。此外,将cd命令合并为一个是有意义的:

cd ..\java\bin
javac screenshot.java
set CLASSPATH=.
java screenshot
pause

#2

As inquizitive pointed out, I made a mistake with the name. The class name is Screenshot, not screenshot. I am so sorry for troubling you guys.Thank You

正如inquizitive指出的那样,我的名字出错。类名是截图,而不是截图。我很抱歉让你们烦恼。谢谢

#3

I had a similar problem. Maybe that solution will help some people for faster compile their java-programs.

我有类似的问题。也许这个解决方案可以帮助一些人更快地编译他们的java程序。

It would be easier if you would make the batch reusable.

如果您可以使批次可重复使用会更容易。

@echo off                                        
title Java Compiler
:start
cd C:\[...]                                     
set /p id="Enter Name without file extension:"  
javac %id%.java
set /p ic="Enter Name without file extension: "
java %ic%
set /p ib="Want to exit? (type in "exit", else nothing): "
%ib%
set /p ia="Want to Clear the Window? (type in "cls", else nothing): "
%ia%
goto start

Line 3 put your project-folder in there, for example "C:\Users\User\Desktop\Projects"

第3行将项目文件夹放在那里,例如“C:\ Users \ User \ Desktop \ Projects”

Line 4 is a new variable, asks you for your source-file. (For the source-file "example.java" type in "example")

第4行是一个新变量,要求您提供源文件。 (对于“example”中的源文件“example.java”类型)

Line 5 compile the source file.

第5行编译源文件。

Line 6 is another variable, asks for the compiled file. (For the file "example.class" type in "example")

第6行是另一个变量,要求编译文件。 (对于“example.class”文件,在“example”中输入)

Line 7 run your compiled java-program.

第7行运行已编译的java程序。

#4

-1

It can be done in two ways:

它可以通过两种方式完成:

a) Set JAVA_PATH is in environmental variables.(Right Click->My Computer->Advanced) In .bat file please add the following:
java screenshot pause

a)设置JAVA_PATH是环境变量。(右键单击 - >我的电脑 - >高级)在.bat文件中请添加以下内容:java screenshot pause

b) In .bat file do the following entries: a) set PATH="%PATH%;%YOUR JAVA PATH TILL BIN% b) java screenshot

b)在.bat文件中执行以下输入:a)设置PATH =“%PATH%;%YOUR JAVA PATH TILL BIN%b)java screenshot

The above two approaches should work. If you are setting environment variable please make sure to open a new window.

以上两种方法应该有效。如果您要设置环境变量,请务必打开一个新窗口。

#1