I am trying to execute jar files from another Java program. I am using the following code :
try {
Runtime runtime = Runtime.getRuntime();
You can run a jar file from where ever you want by using only this one line code.
Desktop.getDesktop().open(new File("D:/FormsDesktop.jar"));
where
new File("your path to jar")
Hope it helps.
Thanks.
First suggestion/recommendation is to use ProcessBuilder instead of Runtime. Here is what you can try:
ProcessBuilder pb = new ProcessBuilder("java", "-jar", "./jarpath/yourjar.jar");
Process p = pb.start();
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String s = "";
while((s = in.readLine()) != null){
System.out.println(s);
}
int status = p.waitFor();
System.out.println("Exited with status: " + status);
Using ProcessBuilder(java.lang.ProcessBuilder) will solve your problem. Syntax is as follows -
ProcessBuilder pb = new ProcessBuilder("java", "-jar", "absolute path upto jar");
Process p = pb.start();
You can redirent input/output/error to/from files as follows
File commands = new File("absolute path to inputs file");
File dirOut = new File("absolute path to outputs file");
File dirErr = new File("absolute path to error file");
dirProcess.redirectInput(commands);
dirProcess.redirectOutput(dirOut);
dirProcess.redirectError(dirErr);