使用java打开本地文件的方法

class Java{
	public static void main(String[] args){
		 final Runtime runtime = Runtime.getRuntime();  
    Process process = null;
    final String cmd = "rundll32 url.dll FileProtocolHandler file://E:\\chengxu\\a.java";//要打开的文件路径。
    try {  
        process = runtime.exec(cmd);  
    } catch (final Exception e) {  
        System.out.println("Error exec!");  
    } 
	}
}