KeyListener error -

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i have problem adding keylistener aplication:

app.game not abstract , not override abstract method keyrelased(java.awt.event.keyevent) in java.awt.event.keylistener

i try create new public class keyadapt. gives same error.
code of application the:

public int x = 100, y = 100; public class game extends jframe implements keylistener {     public game() {         super();         setdefaultcloseoperation(jframe.dispose_on_close);         setlocationrelativeto(null);         setundecorated(true);         setlayout(null);         setvisible(true);     }     public void paint (graphics gdc) {         gdc.clearrect(0, 0, getsize().width, getsize().height);         getgraphics().drawoval(x, y, 20, 20);     }     public void keypressed(keyevent e) {         if (e.getkeycode() == keyevent.vk_up ) {             y++;         }         if (e.getkeycode() == keyevent.vk_down ) {             y--;         }         if (e.getkeycode() == keyevent.vk_right ) {             x++;         }         if (e.getkeycode() == keyevent.vk_left ) {             x--;         }     }     public void keyrelased(keyevent e) {         if (e.getkeycode() == keyevent.vk_up ) {             y+=0;         }         if (e.getkeycode() == keyevent.vk_down ) {             y-=0;         }         if (e.getkeycode() == keyevent.vk_right ) {             x+=0;         }         if (e.getkeycode() == keyevent.vk_left ) {             x-=0;         }     }     public void keytyped(keyevent e) {} }


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