java调用Exe文件

package com.tjpu.helen.test;

public class RunExe {
    public static void main(String[] args) {
        Runtime rn = Runtime.getRuntime();
        Process p = null;
        try {
            String str = "\"C:/DbVisualizer-6.0.7/DbVisualizer-6.0.7/dbvis.exe\"";
            p = rn.exec(str);
        } catch (Exception e) {
            System.out.println("Error to run the exe");
        }
    }
}