Learn the layout and arrangement skills of the "paper style" framework in the Java library
Learn the layout and arrangement skills of the "paper style" framework in the Java library
introduction:
Paper Layout is a Java class library commonly used to implement functions such as documentation, reporting, printing output and other functions.It provides a set of powerful typesetting and arrangement techniques that can help developers easily control the format, structure and presentation of paper.This article will introduce the basic concepts and usage methods of the paper style framework, and provide some Java code examples to help you better understand.
1. Overview of paper style framework
The paper -style framework is based on the expansion of Java printing technology, which aims to help developers flexibly configure and operate the layout and style of printing and output in the application.It provides a series of objects and methods such as paper, pages, paragraphs and texts, and supports various typesetting and arrangement operations, such as header, foot, page number, table, pictures, etc.
2. Paper and page settings
When using a paper style framework, the size, border distance and direction of the paper are first configured with attributes such as the paper.This can be implemented by setting the PageFormat object, such as:
PageFormat pageFormat = new PageFormat();
pageFormat.setPaper(new Paper());
pageFormat.setOrientation(PageFormat.PORTRAIT);
pageFormat.getPaper().setSize(595, 842);
pageFormat.getPaper().setImageableArea(36, 36, 523, 770);
In this example, we created a PageFormat object, and set the paper size of A4 (595mm x 842mm).You can adjust these values as needed to meet different printing needs.
3. Text and paragraph arrangement
The paper style framework provides some methods to handle text and paragraphs.You can use the ATTRIBUTEDSTRING class to specify the style of the text, such as fonts, colors, and size.The following is an example code that demonstrates how to create a medium -altogenic paragraph and set different styles of text:
AttributedString attributedString = new AttributedString("Hello, World!");
attributedString.addAttribute(TextAttribute.FONT,
new Font("Arial", Font.BOLD, 12));
attributedString.addAttribute(TextAttribute.BACKGROUND, Color.YELLOW);
attributedString.addAttribute(TextAttribute.FOREGROUND, Color.RED);
Paragraph paragraph = new Paragraph(attributedString, Align.CENTER);
In this example, we created an ATTRIBUTEDSTRING object, set the text as "Hello, World!", And specifically specified some styles for it, such as the font, the body, the size of the size, the size of the size, the background color is yellow, the foreground color color, the prospect colorFor red.Then, we used this ATTRIBUTEDSTRING object to create a central alignment paragraph.
4. Table arrangement
The paper style framework also provides some methods to create and arrange forms.You can use the Table class to define the lines, columns and cells of the form, and specify the style and alignment of cells.The following is an example code that demonstrates how to create a simple form:
Table table = new Table(3, 3);
table.setColumnWidth(0, 100);
table.setColumnWidth(1, 150);
table.setColumnWidth(2, 200);
table.setcelltext (0, 0, "name");
table.setcelltext (0, 1, "age");
table.setcelltext (0, 2, "gender");
table.setcelltext (1, 0, "Zhang San");
table.setCellText(1, 1, "25");
Table.setCellText (1, 2, "man");
table.setcelltext (2, 0, "Li Si");
table.setCellText(2, 1, "30");
table.setCellText(2, 2, "女");
In this example, we created a table of 3 lines and 3 columns and set the width of each column.We then set text content to set the SetCellText method for each cell of the table.You can adjust the number of rows, the number of columns, and the cell style to meet different arrangement needs.
Summarize:
The paper -style framework is a powerful Java class library that provides rich typesetting and arrangement skills, which can be used to implement documents, reports, printing and output and other functions.This article introduces the concept and basic use of the paper -style framework, and provides some Java code examples.I hope these examples can help you better understand and apply paper -style framework.
