This document discusses several Java Swing components: JTextField, JTextArea, JPasswordField, and JButton. It provides details on their constructors and common methods, such as setText() for JTextField, append() for JTextArea, getPassword() for JPasswordField, and doClick() for JButton. These components can be added to a JFrame graphical user interface.

1. CS3135/CS2135
Object Oriented Programming (Java)
BSCS-3 / MCS-3
Lecture # 7
JTextField
JTextArea
JPassword
JButton

2. javax.swing.JTextField
• JTextField()
• JTextField(String)
• JTextField(String, int)
• JTextField(int) //int is width in columns. String contains field's initial text.
• void setText(String)
• String getText()
• void setEditable(boolean)
• boolean isEditable()
• void setColumns(int)
• int getColumns()
• void setHorizontalAlignment(int)
• int getHorizontalAlignment()
• void setVisible(boolean)
• void setFont(Font)
• void setForeGround(Color)
GUI Components  JFrame  JTextField
Instructor: Tanzila Kehkashan
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3. Instructor: Tanzila Kehkashan
3

4. javax.swing.JTextArea
• JTextArea()
• JTextArea(int, int) //rows and columns
• JTextArea(String)
• JTextArea(String, int, int)
• void append(String)
• int getColumns()
• int getRows()
• int insert(String, int) //position
• void replaceRange(String, int, int) //starting and ending index
• void setColumns(int)
• void setFont(Font)
• void setLineWrap(boolean)
• void setRows(int) //number of rows
GUI Components  JFrame  JTextArea
Instructor: Tanzila Kehkashan
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5. javax.swing.JPasswordField
• JPasswordField()
• JPasswordField(int)
• JPasswordField(String)
• JPasswordField(String, int)
• char[] getPassword()
• javax.swing.JButton
• JButton()
• JButton(Icon)
• JButton(String)
• JButton(String, Icon)
• void doClick(int)
GUI Components  JFrame  JPasswordField
GUI Components  JFrame  JButton
Instructor: Tanzila Kehkashan
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6. Instructor: Tanzila Kehkashan
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7. Instructor: Tanzila Kehkashan
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