class Test
{
public static void main(String[] args)
{
try
{
String aa="D:\\add\\MyProject\\aa.txt";
java.io.File f = new java.io.File(aa);
if (!f.exists()) {
f.createNewFile();
}
}
catch (IOException e)
{
System.out.println(e);
}
<script>
function cFile()
{
var fso=new ActiveXObject("Scripting.FileSystemObject");
if (!fso.FileExists("C:\\duero.txt")){
var f = fso.CreateTextFile("C:\\duero.txt");
f.WriteLine("duero");
f.close();
}
}
</script>
<input type=button onclick="cFile()" value="CreateFile">