String file = "script.sh";
File shellScriptFile= new File(file);
Runtime run = Runtime.getRuntime();
ProcessBuilder processBuilder = new ProcessBuilder(shellScriptFile.getAbsolutePath(), "Argument-ONE" , "Argument-TWO");
Process process = processBuilder.start();

Process process = processBuilder.start();
int exitCode = process.waitFor();
switch(exitCode) {
    case 0:
        // everything is ok
        break;
    case 1:
        // handle
        break;
    // and so on ...
    default:
        // default
}

package testShellScript;

import java.io.IOException;
import org.apache.commons.exec.CommandLine;
import org.apache.commons.exec.DefaultExecutor;
import org.apache.commons.exec.ExecuteException;

public class TestScript {
    int iExitValue;
    String sCommandString;

    public void runScript(String command){
        sCommandString = command;
        CommandLine oCmdLine = CommandLine.parse(sCommandString);
        DefaultExecutor oDefaultExecutor = new DefaultExecutor();
        oDefaultExecutor.setExitValue(0);
        try {
            iExitValue = oDefaultExecutor.execute(oCmdLine);
        } catch (ExecuteException e) {
            // TODO Auto-generated catch block
            System.err.println("Execution failed.");
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            System.err.println("permission denied.");
            e.printStackTrace();
        }
    }

    public static void main(String args[]){
        TestScript testScript = new TestScript();
        testScript.runScript("sh /root/Desktop/testScript.sh");
    }
}

public static void main(String[] args) {
    String[] cmd = { "/bin/sh", "-c", "script.sh" };
    BufferedReader bri = null, bre = null;
    int exitC = 0;
    try {
        Process p = Runtime.getRuntime().exec(cmd);
        exitC = p.waitFor();
        bri = new BufferedReader(new InputStreamReader(p.getInputStream()));
        bre = new BufferedReader(new InputStreamReader(p.getErrorStream()));
        String line = "";
        while ((line = bri.readLine()) != null) {
            System.out.println(line);
        }
        while ((line = bre.readLine()) != null) {
            System.out.println(line);
        }
        bri.close();
        bre.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("Exit Code: "+ exitC);
}

String file = "script.sh";
    File shellScriptFile= new File(file);
    Runtime run = Runtime.getRuntime();
    ProcessBuilder processBuilder = new ProcessBuilder(shellScriptFile.getAbsolutePath(), "Argument-ONE" , "Argument-TWO");
    try {
        Process process = processBuilder.start();
        int exitC = process.waitFor();
        BufferedReader bri = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String inputLine = "";
        while ((inputLine = bri.readLine()) != null) {
            System.out.println(inputLine);
        }
        BufferedReader bre = new BufferedReader(new InputStreamReader(process.getErrorStream()));
        String errorLine = "";
        while ((errorLine = bre.readLine()) != null) {
            System.out.println(errorLine);
        }
        System.out.println("Exit Code:" + exitC);
    } catch (IOException e){
        //captured Exception Here
        //e.printStackTrace();
    }