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  1. import javax.swing.*;
  2. import java.awt.*;
  3. class MyGradient extends JFrame {
  4.    JPanel[][] pix = new JPanel[255][255];
  5.    Container con = getContentPane();
  6.    public MyGradient() {
  7.       con.setLayout(new GridLayout(255,255));
  8.       for (int i = 0; i < 255; i++) { for (int j = 0; j < 255; j++) {
  9.          pix[i][j] = new JPanel();
  10.          con.add(pix[i][j]);
  11.       } }
  12.       setSize(255,255);
  13.    }
  14.    public void paint(Graphics gr) {
  15.       super.paint(gr);
  16.       for (int i = 254; i > -1; i--) { for (int j = 254; j > -1; j--) {
  17.          pix[i][j].setBackground(new Color(i, j, i);
  18.       }}
  19.    }
  20.    public static void main(String[] args) { MyGradient aFrame = new MyGradient(); aFrame.setVisible(true); }
  21. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:17: error: ')' expected
         pix[i][j].setBackground(new Color(i, j, i);
                                                   ^
1 error
stdout
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Standard output is empty
https://ideone.com/nQddbE
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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