java - JFrame not drawing -

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i'm making pong game jframe it's not drawing.

package src;  import java.awt.color; import java.awt.graphics;  import javax.swing.*;  public class pong_game extends jframe{ public void init() {     settitle("pong");     setsize(500, 500);     setresizable(false);     setvisible(true); }  public void paintcomponent(graphics g) {      g.setcolor(color.black);      g.fillrect(0, 0, 500, 500); } }

my window blank, why? 1 thing might worth noting paintcomponent method seems lot of people spell differently or use differently think did wrong.


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