它有什么问题？ jform应用程序

Question

I am creating an app that runs a file if user has provided correct login and password in netbeans.

import java.io.File;
import java.io.IOException;
import java.awt.*;
import java.lang.Runtime;
import java.awt.Desktop;
import static java.awt.SystemColor.desktop;
import java.io.File;
 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
if(Desktop.isDesktopSupported()){
Desktop desktop = Desktop.getDesktop();
}
if(desktop.isSupported(Desktop.Action.OPEN)){
    desktop.open(new File("C:\\Users\\user\\Desktop\\asd.png"));
}
jTextField1.setText(" ");     
jTextField2.setText(" ");    
    }             

It is showing an error in -

 if(desktop.**isSupported**(Desktop.Action.OPEN)){
    desktop.**open**(new File("C:\\Users\\user\\Desktop\\asd.png"));

COMPILATION ERROR : 
-------------------------------------------------------------
NewJFrame.java:[130,11] cannot find symbol
  symbol:   method isSupported(java.awt.Desktop.Action)
  location: variable desktop of type java.awt.SystemColor
NewJFrame.java:[131,12] cannot find symbol
  symbol:   method open(java.io.File)
  location: variable desktop of type java.awt.SystemColor
2 errors 
------------------------------

Answer 1

You have created a variable Desktop desktop . You also have a static import java.awt.SystemColor.desktop . static import desktop has precedence over variable desktop. Open method is not available in java.awt.SystemColor.desktop. It is available in java.awt.Desktop. You should rename your variable desktop to awtDesktop or something.