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