Java的常用方法--文本框和文本区

最新推荐文章于 2021-02-16 22:06:48 发布

yzkzoo

最新推荐文章于 2021-02-16 22:06:48 发布

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本文详细介绍了Swing中文本组件的使用方法，包括TextField和TextArea的构造方式、常用方法及属性设置等。通过本文，读者可以了解到如何创建不同长度的文本框、如何构造并设置文本区的内容以及如何进行文本编辑和监听。

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1、文本框
TextField() 构造文本框，一个字符长
TextField(int x) 构造文本框，x个字符长
TextField(String s) 构造文本框，显示s
setText(String s) 设置文本为s
getText() 获取文本
setEchoChar(char c) 设置显示字符为c
setEditable(boolean) 设置文本框是否可以被修改
addActionListener() 添加监视器
removeActionListener() 移去监视器
2、文本区
TextArea() 构造文本区
TextArea(String s) 构造文本区，显示s
TextArea(String s,int x,int y) 构造文本区，x行，y列，显示s
TextArea(int x,int y) 构造文本区，x行，y列
TextArea(String s,int x,ing y,int scrollbar)
scrollbar的值是：
TextArea.SCROLLBARS_BOTH
TextArea.SCROLLBARS_VERTICAL_ONLY
TextArea.SCROLLBARS_HORIZONTAL_ONLY
TextArea.SCROLLBARS_NONE
setText(String s) 设置文本为s
getText() 获取文本
addTextListener() 添加监视器
removeTextListener() 移去监视器
insert(String s,int x) 在x处插入文本s
replaceRange(String s,int x,int y) 用s替换从x到y处的文本
append(String s) 在文本的最后追加文本s
Int getCaretPosition(int n) 获取文本区中光标的位置

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