How can i call an external file in java?

Question

say i want to call a pdf when someone click a button in java , what is the required exec code for that?

Answer 1

For that, you'll need to import the File, IOException, and Desktop libraries:

import java.io.File;
import java.io.IOException;
import java.awt.Desktop;

Then, somewhere in the body of your code, try:

Desktop d = Desktop.getDesktop();
File pdf = new File("C:\path\to\file");

After that, call d.open() with pdf as the argument. Make sure you do this within a try-catch block, because it could throw an IOException if the file path is invalid.