; --- Copyright Jonathan Meyer 1996. All rights reserved. ----------------- ; File: jasmin/examples/HelloWeb.j ; Author: Jonathan Meyer, 10 July 1996 ; Purpose: Demonstration of a Jasmin-created applet ; ------------------------------------------------------------------------- ; HelloWeb.j ; This demonstrates how you can use Jasmin to create an applet. ; The code below is like the Java code: ; ; import java.applet.*; ; import java.awt.*; ; ; public class HelloWeb extends Applet { ; private Font font; ; ; public void init() { ; font = new Font("Helvetica", Font.BOLD, 48); ; } ; ; public void paint(Graphics g) { ; g.setFont(font); ; g.drawString("Hello World!", 25, 50); ; } ; } .class public HelloWeb .super java/applet/Applet .field private font Ljava/awt/Font; ; my init() method - allocate a font and assign it to this.font. .method public init()V .limit stack 5 ; Create a new Font and call its constructor with ; "Helvetica", 1 (i.e. Font.BOLD), and 48. new java/awt/Font dup ldc "Helvetica" iconst_1 bipush 48 invokenonvirtual java/awt/Font/(Ljava/lang/String;II)V ; now store the Font on the stack in this.font aload_0 swap putfield HelloWeb/font Ljava/awt/Font; ; done return .end method ; my paint() method - draws the string "Hello World!" using this.font. .method public paint(Ljava/awt/Graphics;)V .limit stack 4 .limit locals 2 ; local variable 0 holds ; local variable 1 holds the java.awt.Graphics instance ('g'). ; g.setFont(this.font); aload_1 aload_0 getfield HelloWeb/font Ljava/awt/Font; invokevirtual java/awt/Graphics/setFont(Ljava/awt/Font;)V ; g.drawString("Hello Web!", 25, 50); aload_1 ldc "Hello Web!" bipush 25 bipush 50 invokevirtual java/awt/Graphics/drawString(Ljava/lang/String;II)V ; done return .end method ; standard constructor .method public ()V aload_0 invokenonvirtual java/applet/Applet/()V return .end method