i have an executable program (.exe) writen in c++ and run on windows console and i have a java swing applecation , so i want my java application to interact with the console app (send input and get output) . but how to do that ?
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Do you have the ability to modify the executable?Michael Krauklis– Michael Krauklis2010-01-21 18:24:55 +00:00Commented Jan 21, 2010 at 18:24
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2 Answers
You can do it this way
// Create the proccess in JAVA
Process proc = Runtime.getRuntime().exec("Name of application");
// Receive outputs from another program inside Java by a stream
InputStream ips = proc.getInputStream();
// Using the stream to get the messages from another program
String output = "";
int c = 0;
while ((c = ips.read()) != -1){
output+= (char)c;
}
//Inputs messages into another program
OutputStream ops = proc.getOutputStream();
ops.write("an byte array");
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You can launch the C++ program from within the Java program which allows you to write to its standard input, and read its standard output. Check the Runtime class.
answered Jan 21, 2010 at 15:34
Thorbjørn Ravn Andersen
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