[英]How to run Java command through code?
I am trying to execute the below code 我正在尝试执行以下代码
String command="cmd /c ls";
String location="C:\\project";
final Process process = Runtime.getRuntime().exec(
dosCommand + " " + location);
I am getting the files, but when I run the cmd /c java I didn't get the output. 我正在获取文件,但是当我运行cmd / c java时却没有得到输出。
my Java home is added to environment variables. 我的Java主页已添加到环境变量。
When I give Java in command prompt I am getting the Java related files. 当我在命令提示符下输入Java时,我正在获取与Java相关的文件。 I am not getting through my program.
我没有通过我的程序。
I assume you want to run a Java program throught command line in your Java program? 我假设您想通过Java程序中的命令行运行Java程序? Try this:
尝试这个:
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("java ...");
http://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html http://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html
Assuming you use Java 1.5 or higher, I'd recommend using ProcessBuilder if you want to execute from a different path. 假设您使用Java 1.5或更高版本,如果要从其他路径执行,建议使用ProcessBuilder。 It allows you to easily set the working directory for the process.
它使您可以轻松地为进程设置工作目录。
final Process pr = new ProcessBuilder(
"java",
"-Xms512M",
"-Xmx1024M",
"-jar",
"your_jar_to_use.jar",
"your Java class")
.directory(new File("<your directory>")) //Set the working directory to <your directory>
.start();
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