java打开并显示文件

方法一：利用Runtime类（运行时操作类，封装了JVM进程的类）中的exec(String commad)方法执行本机命令

There are four overloaded versions of the exec() command:

• public Process exec(String command);
• public Process exec(String [] cmdArray);
• public Process exec(String command, String [] envp);
• public Process exec(String [] cmdArray, String [] envp);

Runtime.getRuntime().exec("rundll32 url.dll FileProtocolHandler "+"目标文件绝对路径");

方法二：

java.awt.Desktop.getDesktop().open(new File("目标文件绝对路径"));

二者的区别？？欢迎大家评论！！！