How to start/stop Tomcat server in Java

package com.calltomcat.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class CallTomcat {
 public static void main(String[] args) {
 //String command = "E:\\apache-tomcat-7.0.76\\bin\\startup.bat";//Start tomcat command//String command = "E:\\apache-tomcat-7.0.76\\bin\\tomcat7w.exe";//Start Tomcat command, only for Windows version, no pop-up boxString command = "E:\\apache-tomcat-7.0.76\\bin\\shutdown.bat";//Shutdown tomcat command CallTomcat callTomcat = new CallTomcat();
 try {
  callTomcat.callCommand(command);
 } catch (IOException e) {
  System.out.println("Error executing command: " + e.getMessage());
 }
 }
 /**
 * Execute command * 
 * @throws IOException
 */
 private void callCommand(String command) throws IOException {
 Runtime runtime = Runtime.getRuntime(); //Returns the runtime object associated with the current Java application //Instructs the Java virtual machine to create a child process to execute the specified executable program, and returns the Process object instance corresponding to the child process Process process = runtime.exec(command);
 runtime.gc(); //Run the garbage collector String line = null;
 String content = "";
 BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
 while((line = br.readLine()) != null) {
  content += line + "\r\n";
 }
 System.out.println(content);
 }
}