CODEWITHSUNDEEP
javajsp
Maninder Singh
Maninder Singh

Reputation: 135

How to print the output of Process Builder Line wise

I have code to Print output of ipconfig command using process builder. But I want to print one Line at a time. The idea is to remove few line from the output which the client doesn't want to see in output. Following is the code.

{
File file=new File("D:\\LC");
String[] command = {"CMD", "/C", "dir"};
ProcessBuilder probuilder = new ProcessBuilder( command );
probuilder.directory(file);
Process p = pb.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
String readline;
while ((readline = reader.readLine()) != null) 
{
    out.println(readline);
    out.println("<br>");
}
}

Here in While loop readline stores the entire value in single shot and hence I can not remove some info from out put. I want readline to take values one line at a time so that by using loops and conditions i can remove line I don't want to print. Thanks for your support in advance.

Upvotes: 0

Views: 6122

Answers (1)

Saravana
Saravana

Reputation: 12817

There is a typo in your code, it should be probuilder.start() not pb.start().

I have run the program it works as expected, readLine() reads line by line.

 public static void main(String[] args) throws IOException {
    String[] cmd = { "CMD", "/C", "dir" };
    ProcessBuilder probuilder = new ProcessBuilder(cmd);
    Process p = probuilder.start();
    BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
    String readline;
    int i = 0;
    while ((readline = reader.readLine()) != null) {
        System.out.println(++i + " " + readline);
    }
}

Output:-

1 Volume in drive C is System 2 Volume Serial Number is 1C25-498E 3 4 Directory of C:\juno\ksaravan\workspace\CommandPrompt 5 6 01/13/2015 12:47 PM <DIR> . 7 01/13/2015 12:47 PM <DIR> .. 8 02/13/2015 10:57 AM 623 .classpath 9 01/05/2015 12:48 PM 389 .project

Upvotes: 1

Related Questions