To get InputStream of a Process

Question

Hi i am trying to run a java program using Process class here is the code
Runtime p =Runtime.getRuntime();     
String a1= "java \"C:\\Program Files\\Java\\jdk1.6.0_07\\bin\\First\" ";
Process r=p.exec(a1);
BufferedReader bread= new BufferedReader(new InputStreamReader(in));     
String st;
while((st=bread.readLine())!=null)
System.out.println(st);
First is a compiled java code i want to run the file instead of printing the output of the program i want to store it in a String
now the problem is it goes to infinite loop just waiting
help

Answer 1

1. You don't specify the full path to the Java class. That won't work. You have to give the fully-qualified classname, and that has to reflect a path relative to some classpath root. This is always the case with Java, whether you're doing runtime.exec or not.
2. To get the streams of a process you launch, see this: [http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html]
3. Consider using ProcessBuilder, rather than Runtime.exec.