import java.awt.GridLayout ; import javax.swing.JFrame ; import javax.swing.JPasswordField ; import javax.swing.JLabel ; public class JPasswordDemo01{ public static void main(String args[]){ JFrame frame = new JFrame("Welcome To MLDN") ; JPasswordField jpf1 = new JPasswordField() ; JPasswordField jpf2 = new JPasswordField() ; jpf2.setEchoChar('#') ; // 设置回显 JLabel lab1 = new JLabel("默认的回显:") ; JLabel lab2 = new JLabel("回显设置“#”:") ; lab1.setBounds(10,10,100,20) ; lab2.setBounds(10,40,100,20) ; jpf1.setBounds(110,10,80,20) ; jpf2.setBounds(110,40,50,20) ; frame.setLayout(null) ; frame.add(lab1) ; frame.add(jpf1) ; frame.add(lab2) ; frame.add(jpf2) ; frame.setSize(300,100) ; frame.setLocation(300,200) ; frame.setVisible(true) ; } };
import java.awt.GridLayout ; import javax.swing.JFrame ; import javax.swing.JTextArea ; import javax.swing.JLabel ; public class JTextAreaDemo01{ public static void main(String args[]){ JFrame frame = new JFrame("Welcome To MLDN") ; JTextArea jta = new JTextArea(3,10) ; // 设置大小 JLabel lab = new JLabel("多行文本域:") ; lab.setBounds(10,10,120,20) ; jta.setBounds(130,10,150,100) ; frame.setLayout(null) ; // 取消布局管理器 frame.add(lab) ; frame.add(jta) ; frame.setSize(300,150) ; frame.setLocation(300,200) ; frame.setVisible(true) ; } };
import java.awt.GridLayout ; import javax.swing.JFrame ; import javax.swing.JTextArea ; import javax.swing.JScrollPane ; import javax.swing.JLabel ; public class JTextAreaDemo02{ public static void main(String args[]){ JFrame frame = new JFrame("Welcome To MLDN") ; JTextArea jta = new JTextArea(3,10) ; // 设置大小 JLabel lab = new JLabel("多行文本域:") ; JScrollPane scr = new JScrollPane(jta,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS ,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS ) ; frame.setLayout(new GridLayout(2,1)) ; // 取消布局管理器 frame.add(lab) ; frame.add(scr) ; frame.setSize(300,150) ; frame.setLocation(300,200) ; frame.setVisible(true) ; } };
import java.awt.GridLayout ; import javax.swing.JFrame ; import javax.swing.JTextField ; import javax.swing.JLabel ; public class JTextDemo01{ public static void main(String args[]){ JFrame frame = new JFrame("Welcome To MLDN") ; JTextField name = new JTextField(30) ; JTextField noed = new JTextField("MLDN",10) ; JLabel nameLab = new JLabel("输入用户姓名:") ; JLabel noedLab = new JLabel("不可编辑文本:") ; name.setColumns(30) ; noed.setColumns(10) ; noed.setEnabled(false) ; // 表示不可编辑 frame.setLayout(new GridLayout(2,2)) ; frame.add(nameLab) ; frame.add(name) ; frame.add(noedLab) ; frame.add(noed) ; frame.setSize(300,100) ; frame.setLocation(300,200) ; frame.setVisible(true) ; } };
import java.awt.GridLayout ; import javax.swing.JFrame ; import javax.swing.JTextField ; import javax.swing.JLabel ; public class JTextDemo02{ public static void main(String args[]){ JFrame frame = new JFrame("Welcome To MLDN") ; JTextField name = new JTextField(30) ; JTextField noed = new JTextField("MLDN",10) ; JLabel nameLab = new JLabel("输入用户姓名:") ; JLabel noedLab = new JLabel("不可编辑文本:") ; name.setColumns(30) ; noed.setColumns(10) ; noed.setEnabled(false) ; // 表示不可编辑 nameLab.setBounds(10,10,100,20) ; noedLab.setBounds(10,40,100,20) ; name.setBounds(110,10,80,20) ; noed.setBounds(110,40,50,20) ; frame.setLayout(null) ; frame.add(nameLab) ; frame.add(name) ; frame.add(noedLab) ; frame.add(noed) ; frame.setSize(300,100) ; frame.setLocation(300,200) ; frame.setVisible(true) ; } };