Help My friends

Question

Help me please, I'm trying to call several images from my package with the setIcon method, actually I want the method to show me the images that I assign in my jlabel. But somehow my code throws me an error.

import javax.swing.Icon;
import javax.swing.ImageIcon;

setColor(btnInicio2,Lbl_inicio,"/iconosV2/home-altVr.png"); resetColor(btnCliente2,Lbl_clientes,"/iconosV1/users-altV.png"); resetColor(btnProveedor2,Lbl_proveedor,"/iconosV1/truckV.png");

private void setColor(JPanel pane, JLabel lbl, String url) {
pane.setBackground(new Color(89, 106, 158));
lbl.setForeground(new Color(255,255,255));
lbl.setIcon(new ImageIcon(getClass().getResource(url))); }

private void resetColor(JPanel pane, JLabel lbl, String url) {
pane.setBackground(new Color(57,76,135));
lbl.setForeground(new Color(166, 166, 166));
lbl.setIcon(new ImageIcon(getClass().getResource(url))); }

Answer 1

I checked this, it works:

import javax.swing.*;
import java.awt.Color;

public class SetColor_test {
public static void main(String[] args) {
new SetColor_test().run();
}

void run() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(
JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 700);

JPanel panel = new JPanel();
JLabel label = new JLabel("");
panel.add(label);
frame.add(panel);
frame.setVisible(true);

setColor( panel, label, "javaColor.png");
sleep(3);
resetColor(panel, label, "javaBW.png");
}

private void setColor( ... ) { ... }
private void resetColor( ... ) { ... }

void sleep(int sec) {
try { Thread.sleep(sec * 1000); }
catch (InterruptedException e) {
System.out.println(e);
}
}
}