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how to define event to javascript/jquery?

Java Error: please define the main method as....?

  • I keep getting this error: "main method not found in class Applet1, please define the main method as: public static void main(String[] args) " I do not have a main method but this has worked for other people who have the ran the exact same code: import java.awt.*; import java.applet.*; import javax.swing.JOptionPane; /*use a gui to read; make box move includes a pause *an event driven applet */ public class Applet1 extends Applet { Font font; int x, y, w = 20; String s; final boolean T = true, F = false; int len; public void init()//executed by the JVM when the applet is launched { s = JOptionPane.showInputDialog("Type your 15 digit integer please"); len = s.length(); } public void paint(Graphics g)//executed when the applet window is resized { x = 100; y = 100; for(int j = 0; j < len; j++) { int digit = s.charAt(j) - '0'; drawBar(g, digit); x = x + 2*w; } } public void drawBar(Graphics g, int digit) { if(digit == 3) { draw(g, F, T, T, T, T, F, T); } if(digit == 8) { draw(g, T, T, T, T, T, T, T); } } public void draw(Graphics g, boolean ul, boolean top, boolean ur, boolean lr, boolean bottom, boolean ll, boolean mid) { pallet(g, ul); g.drawLine(x, y, x, y-w); pallet(g, top); g.drawLine(x, y-w, x +w, y-w); pallet(g, ur); g.drawLine( x +w, y-w, x+ w, y); pallet(g, lr); g.drawLine( x+ w, y, x+w, y+w); pallet(g, bottom); g.drawLine( x+w, y+w, x, y+w); pallet(g, ll); g.drawLine( x, y+w, x, y); pallet(g, mid); g.drawLine( x, y, x+w, y); } public void pallet(Graphics g, boolean on) { if(on) { g.setColor(Color.red); } else { g.setColor(Color.white); } } } ---- Could it be how I am running it through the command line?

  • Answer:

    I hope you are trying to run this using java command at the dollar prompt. As it is Applet, you have create an html file like: <html> <body> <APPLET code=Applet1 width=200 height=300></APPLET></body></html> If the html file name is abc.html, then open through browser. Or at the DOS prompt run appletviewer abc.html cheers

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Venkateswarlu is correct. If you run it from the command line, then it does need a main. But if you call it a class method from html, then you do not.

Motorhead

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