Bài giảng Lập trình Java căn bản: Chương 7 - ThS. Võ Đức Cẩm Hải

Chapter 7 of the Java Fundamental Programming Lessons textbook by ThS. Võ Đức Cẩm Hải is designed to help students understand classes Font and FontMetrics, the Color class, drawing images on GUI with Graphics and Graphics2D objects. This chapter includes topics such as event handling, color control, font control, graphics and Graphics2D drawing, image files, summary, mouse-drawn program. Students will be introduced to basic drawing issues, including color control, font selection, drawing operations, and exporting image files. In addition, this chapter also introduces the Font class, including its three attributes: font name, font style, and font size. Students will learn how to obtain font sets on the machine and use system fonts in Java applications.

This document is intended for computer science students learning Java programming and seeking to improve their understanding of graphic manipulation, event handling, and drawing operations.

Chapter 7 of the Java Fundamental Programming Lessons textbook by ThS. Võ Đức Cẩm Hải is structured into several sections, each covering a specific topic related to drawing and graphics manipulation. The first section focuses on event handling, where students learn about various types of events such as action events, focus events, input events, and mouse events, and how to handle these events using the ActionListener interface. The second section covers color control, explaining different ways to set colors in Java, including using the Color class, the getColor() method, and the setColor() method. The third section delves into font control, teaching students about the Font class, its constructor, and the methods associated with it such as getFontName(), getStyle(), and getSize(). Students will also learn how to create custom fonts and load system fonts into their applications. The fourth section introduces drawing operations using Graphics and Graphics2D objects. This includes topics such as drawing lines, rectangles, ovals, arcs, polygons, and images. The final section covers image files, discussing the use of various file formats like JPEG, PNG, and GIF, and how to load, display, and save image files using the ImageIO class. Throughout the chapter, students are provided with numerous examples and exercises to reinforce their understanding of the concepts discussed.