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How do I run GDB and accept GDB commands through Java output console?

I am trying to build a GUI for GCC which has some basic functionalities like compile, link, execute, debug, etc for C++ programs using Java. I am creating strings of command which I pass to the ProcessBuilder and run it via command prompt and GCC.
command = "cd src & cd Resources & g++ " + compileFile.cpp +" -Wall "+ " -o "+ "tempOut";
This is a sample code for compiling the file.
Part of this is the debug functionality for which I am using GDB. Now the problem is GDB needs additional input to add breakpoints, remove breakpoints and so on. I am having trouble on how to pass these necessary inputs to GDB via Java terminal. If I pass the commands in the command prompt, it is working fine and I get the desired output.
enter image description here
But whenever I fire the GDB command from the Java program, I cannot pass any inputs from the IDE's terminal. I am aware that each GDB command uses a different process and I tried attaching Java's process ID to GDB but I just get a blank output console. It seems that the GDB session has started but there is no way to interact with that process through the IDE's output console.
int pid = Integer.parseInt(ManagementFactory.getRuntimeMXBean().getName().split("#")[0]);
command = "gdb attach "+ pid;
fireCommand();
EDIT
This is the method that interacts with command prompt to take input and display output in the IDE's output console:
public void fireCommand() {
String line;
String os = System.getProperty("os.name");
ProcessBuilder builder;
if(os.startsWith("Win")) {
builder = new ProcessBuilder("cmd.exe", "/c", command);
}
else{
builder = new ProcessBuilder("bash", "-c", command);
}
try {
process = builder.start();
BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
while ((line = reader.readLine()) != null) {
if(line.contains("Input the value")) {
//any other user input in non debug execution
String value = JOptionPane.showInputDialog(line);
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(process.getOutputStream()));
writer.write(value, 0, value.length());
writer.newLine();
writer.close();
}
else {
output.append(line).append("\n");
}
}
int exitVal = process.waitFor();
if (exitVal == 0) {
//display("Success!");
display(output.toString());
} else {
String lineErr;
BufferedReader readerErr = new BufferedReader(
new InputStreamReader(process.getErrorStream()));
while ((lineErr = readerErr.readLine()) != null) {
outputErr.append(lineErr).append("\n");
}
//display(exitVal);
display(outputErr.toString()); //Display the uncatched errors
}
} catch (IOException e) {
display("There was a problem with the I/O");
e.printStackTrace();
} catch (InterruptedException e) {
display("There was a interruption with the execution");
e.printStackTrace();
}
if(!outputErr.toString().isEmpty())
errorFormatDisplay(); //display Error output function
}
Any leads on this would be very helpful. Thank you.

I am aware that each GDB command uses a different process
No, gdb runs as one process. Did you mean to say that you are creating a new gdb process every time you try to pass it a gdb command ?
It seems that the GDB session has started but there is no way to interact with that process through the IDE's output console.
Maybe you should use The GDB/MI Interface, which e.g. the Emacs debugger mode gud uses.

getting error from java

How can I call a shell script through java code?
I have writtent the below code.
I am getting the process exit code as 127.
But it seems my shell script in unix machine is never called.
String scriptName = "/xyz/downloads/Report/Mail.sh";
String[] commands = {scriptName,emailid,subject,body};
Runtime rt = Runtime.getRuntime();
Process process = null;
try{
process = rt.exec(commands);
process.waitFor();
int x = process.exitValue();
System.out.println("exitCode "+x);
}catch(Exception e){
e.printStackTrace();
}

From this post here 127 Return code from $?
You get the error code if a command is not found within the PATH or the script has no +x mode.
You can have the code below to print out the exact output
BufferedReader stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
String s= null;
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}
BufferedReader stdOut = new BufferedReader(new InputStreamReader(process. getErrorStream()));
String s= null;
while ((s = stdOut.readLine()) != null) {
System.out.println(s);
}

If you are getting an exit code, then your script is executed. There is a command that you are running inside of "Mail.sh", which is not succeccfully executed and returning a status code of 127.
There could be some paths that are explicitly set in your shell, but is not available to the script, when executed outside of the shell.
Try this...
Check if you are able to run /xyz/downloads/Report/Mail.sh in a shell terminal. Fix the errors if you have any.
If there are no errors when you run this in a terminal, then try running the command using a shell in your java program.
String[] commands = {"/bin/sh", "-c", scriptName,emailid,subject,body};
(Check #John Muiruri's answer to get the complete output of your command. You can see where exactly your script is failing, if you add those lines of code)

Running Bash from java does not work

I have this bash:
#!/bin/bash
# File to be tagged
inputfile="/dfs/sina/SinaGolestanirad-Project-OneTextEachTime/SinaGolestanirad-Project/Text.txt"
#inputfile="test/SampleInputs/longParagraph.txt"
# Tagged file to be created
#outputfile="test/SampleOutputs/NERTest.conll.tagged.txt"
outputfile="/dfs/sina/SinaGolestanirad-Project-OneTextEachTime/SinaGolestanirad-Project/1.Generate-Basic-Questions/Tagged-Named-Entites-Text.txt"
# Config file
#configfile="config/conll.config"
configfile="config/ontonotes.config"
# Classpath
cpath="target/classes:target/dependency/*"
CMD="java -classpath ${cpath} -Xmx8g edu.illinois.cs.cogcomp.LbjNer.LbjTagger.NerTagger -annotate ${inputfile} ${outputfile} ${configfile}"
echo "$0: running command '$CMD'..."
$CMD
When I run either java codes below they do not give any errors but they just show the bash file in my Eclipse Console, in other words they do not run the bash !! and the value for process.exitValue() is 1, by the way, my OS is CentOS, linux.
Firs JAVA code :
try {
Process process = new ProcessBuilder(command).start();
process.waitFor();
System.out.println(process.exitValue());
BufferedReader buf = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = buf.readLine()) != null) {
System.out.println("exec response: " + line);
}
} catch (Exception e) {
System.out.println(e);
}
Second JAVA code :
String command = "/dfs/sina/SinaGolestanirad-Project-OneTextEachTime/"
+ "SinaGolestanirad-Project/1.Generate-Basic-Questions/1.IllinoisNerExtended-DO-NOT-OPEN-BY-ECLIPSE/plaintextannotate-linux.sh";
StringBuffer output = new StringBuffer();
Process p;
try {
String[] cmd = new String[]{"/bin/bash",command};
p = Runtime.getRuntime().exec(cmd);
p.waitFor();
BufferedReader reader = new BufferedReader(new InputStreamReader(
p.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
System.out.println(output.toString());
} catch (Exception e) {
e.printStackTrace();
}
I also checked the bash file permission and it is executable as a program.
How can I run the bash file? The bash should run another program written in java.

-- LeBarton what is the exit code?
Check the output of p.exitValue()

p.waitFor()
InputStreamReader inputStreamReader = new InputStreamReader(p.getErrorStream());
While (inputStreamReader.ready()) { System.out.println(inputStreamReader.read(); }
This will show you the error output. Add this to the bottom below the try.. catch.
You will see the output that you would see on the command line. It will help you narrow down the error.

I found a link which may help, if your bash read some environmental variables.
$PATH variable isn't inherited through getRuntime().exec

Runtime.getRuntime().exec could not execute/show Tabtip.exe

I've set this OnClick method in JavaFX SceneBuilder on a text field that will pop up the Windows 8 touch keyboard if the user select the textfield. However it seems to be nothing happen when I click on the textfield but when I try to check Tabtip.exe in the task manager, it did shown up there. The codes are:
try
{
Runtime rt = Runtime.getRtuntime();
rt.exec( "cmd /c C:\\Programs Files\\Common Files\\Microsoft Shared\\ink\\TabTip.exe");
}
catch
{
ex.printStackTrace();
}
There is not errors triggered or whatsoever, and TabTip.exe is running in task manager, but the pop up keyboard does not show up, anyone has any solution to this? Thanks!

Whenever you want to execute a command which contains spaces in command prompt, you have to wrap it in double quotes.
Like this:
String commandStr = "cmd /c \"C:\\Program Files\\Common Files\\Microsoft Shared\\ink\\mip.exe\"";
rt.exec( commandStr );
And In addition to that, if you want to know your errors, you can get error stream from object of class Process which is returned by runtimeObject.exec().
String commandStr = "cmd /c C:\\Programs Files\\Common Files\\Microsoft Shared\\ink\\TabTip.exe"; // Like you did
InputStream is = rt.exec( commandStr ).getErrorStream();
int b;
while((b=(is.read()))!=-1)
System.out.print((char)b);
}

Please do like this. For me it is ok in window10 with javaFx application.
ProcessBuilder builder = new ProcessBuilder("cmd.exe", "/c", "\"C:\\Program Files\\Common Files\\microsoft shared\\ink\\TabTip.exe");
builder.redirectErrorStream(true);
Process p;
try
{
p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while (true)
{
line = r.readLine();
if (line == null)
{
break;
}
System.out.println(line);
}
}
catch (IOException e)`enter code here`
{
// TODO Auto-generated catch block
e.printStackTrace();
}`enter code here`

The only way to run the TabTip.exe is to run the software on Admin mode.
I found the following batch code on the internet.
How to Use On-Screen and Touch Keyboard Instead of Spiral Keyboard
tasklist | find /I "TabTip.exe" >NUL && (taskkill /IM "TabTip.exe" /T)
start "" "TabTip.exe"
That code kills the TabTip process and executes a new TabTip.
In my case, I created a file called keyboard.bat and added the previous example.
In java, I created a method in order to read this file in the same folder.
That is my code
try{
File file = new File("keyboard.bat");
Runtime.getRuntime().exec(file.getAbsolutePath());
}catch(IOException ex){
Logger.getLogger(RunGazePoint.class.getName()).log(Level.SEVERE, null, ex);
}
after that, I compile my app and wrap it in executable mode with launch4j software.
Another way Is to execute by command, If you are using a multithreaded the system can avoid the lecture of file and not execute the software.
create two methods in order to kill and call the keyboard.
//hide the Keyboard
String[] array = new String[]{"cmd.exe","/c","taskkill /IM \"TabTip.exe\" /F\n" +
""};
Runtime.getRuntime().exec(array);
//Show the keyboard
String[] array = new String[]{"cmd.exe","/c","start \"\" \"TabTip.exe\""};
Runtime.getRuntime().exec(array);

how to launch a shell script in a new gnome terminal, from a java program

I'm trying to run a shell script (say myscript.sh) from a java program.
when i run the script from terminal, like this :
./myscript.sh
it works fine.
But when i call it from the java program, with the following code :
try
{
ProcessBuilder pb = new ProcessBuilder("/bin/bash","./myScript.sh",someParam);
pb.environment().put("PATH", "OtherPath");
Process p = pb.start();
InputStreamReader isr = new InputStreamReader(p.getInputStream());
BufferedReader br = new BufferedReader(isr);
String line ;
while((line = br.readLine()) != null)
System.out.println(line);
int exitVal = p.waitFor();
}catch(Exception e)
{ e.printStackTrace(); }
}
It doesnt goes the same way.
Several shell commands (like sed, awk and similar commands) get skipped and donot give any output at all.
Question : Is there some way to launch this script in a new terminal using java.
PS : i've found that "gnome-terminal" command launches a new terminal in shell,
But, i'm unable to figure out, how to use the same in a java code.
i'm quite new to using shell scripting. Please help
Thanks in advance

In java:
import java.lang.Runtime;
class CLI {
public static void main(String args[]) {
String command[] = {"/bin/sh", "-c",
"gnome-terminal --execute ./myscript.sh"};
Runtime rt = Runtime.getRuntime();
try {
rt.exec(command);
} catch(Exception ex) {
// handle ex
}
}
}
And the contents of the script are:
#!/bin/bash
echo 'hello!'
bash
Notes:
You'll do this in a background thread or a worker
The last command, in the shell script, is bash; otherwise execution completes and the terminal is closed.
The shell script is located in the same path as the calling Java class.

Don't overrwrite your entire PATH...
pb.environment().put("PATH", "OtherPath"); // This drops the existing PATH... ouch.
Try this instead
pb.environment().put("PATH", "OtherPath:" + pb.environment().get("PATH"));
Or, use the full directories to your commands in your script file.

You must set your shell script file as executable first and then add the below code,
shellScriptFile.setExecutable(true);
//Running sh file
Process exec = Runtime.getRuntime().exec(PATH_OF_PARENT_FOLDER_OF_SHELL_SCRIPT_FILE+File.separator+shellScriptFile.getName());
byte []buf = new byte[300];
InputStream errorStream = exec.getErrorStream();
errorStream.read(buf);
logger.debug(new String(buf));
int waitFor = exec.waitFor();
if(waitFor==0) {
System.out.println("Shell script executed properly");
}

This worked for me on Ubuntu and Java 8
Process pr =new ProcessBuilder("gnome-terminal", "-e",
"./progrm").directory(new File("/directory/for/the/program/to/be/executed/from")).start();
The previous code creates a new terminal in a specificied directory and executes a command

script.sh Must have executable permissions
public class ShellFileInNewTerminalFromJava {
public static void main(String[] arg) {
try{
Process pr =new ProcessBuilder("gnome-terminal", "-e", "pathToScript/script.sh").start();
}catch(Exception e){
e.printStackTrace();
}
}
}