GUI.rar_java gui

import javax.swing.*; import java.util.*; import java.awt.*; import java.awt.event.*; import javax.swing.event.*; public class Anli7 implements ActionListener,ItemListener,ListSelectionListener{ JLabel jl; JButton jbtninput; JButton jbtnexit; JRadioButton jrbtn_red; JRadioButton jrbtn_green; JRadioButton jrbtn_blue; JCheckBox jchk_bold; JCheckBox jchk_italic; JComboBox jcbo; JList jlst; Anli7(){ JFrame jf=new JFrame(); jf.setSize(700,300); jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jl=new JLabel("我们喜欢JAVA",JLabel.CENTER); jbtninput=new JButton("修改文字"); jbtnexit=new JButton("退出"); jbtninput.addActionListener(this); jbtnexit.addActionListener(this); //设置单选按钮 jrbtn_red=new JRadioButton("红"); jrbtn_green=new JRadioButton("绿"); jrbtn_blue=new JRadioButton("蓝"); ButtonGroup bg=new ButtonGroup(); bg.add(jrbtn_red); bg.add(jrbtn_green); bg.add(jrbtn_blue); jrbtn_red.addActionListener(this); jrbtn_green.addActionListener(this); jrbtn_blue.addActionListener(this); //设置复选框 jchk_bold=new JCheckBox("粗体"); jchk_italic=new JCheckBox("斜体"); jchk_bold.addActionListener(this); jchk_italic.addActionListener(this); //设置下拉列表框 jcbo=new JComboBox(); jcbo.addItem("8"); jcbo.addItem("12"); jcbo.addItem("24"); jcbo.addItem("36"); jcbo.addItemListener(this); //设置列表框 jlst=new JList(); Vector vv=new Vector(); vv.add("宋体"); vv.add("隶书"); vv.add("黑体"); jlst.setListData(vv); jlst.addListSelectionListener(this); //设置布局方式 JPanel jp=new JPanel(new BorderLayout()); JPanel jpc=new JPanel(); JPanel jp1=new JPanel(new GridLayout(4,1)); JPanel jp11=new JPanel(); JPanel jp12=new JPanel(); JPanel jp13=new JPanel(); JPanel jp2=new JPanel(); JPanel jp3=new JPanel(); JPanel jps=new JPanel(new FlowLayout(FlowLayout.LEFT,40,10)); FlowLayout fl=new FlowLayout(FlowLayout.LEFT); jp11.setLayout(fl); jp12.setLayout(fl); jp13.setLayout(fl); jp2.setLayout(fl); jp11.add(new JLabel("请选择前景色：")); jp11.add(jrbtn_red); jp11.add(jrbtn_green); jp11.add(jrbtn_blue); jp12.add(new JLabel("请选择字型：")); jp12.add(jchk_bold); jp12.add(jchk_italic); jp13.add(new JLabel("请选择字号：")); jp13.add(jcbo); jpc.add(jl); jp1.add(jp11); jp1.add(jp12); jp1.add(jp13); jp2.add(new JLabel("请选择字体：")); jp2.add(jlst); jp3.add(jbtninput); jp3.add(jbtnexit); jps.add(jp1); jps.add(jp2); jps.add(jp3); jp.add(jpc,BorderLayout.CENTER); jp.add(jps,BorderLayout.SOUTH); jf.add(jp); jf.setVisible(true); } public void itemStateChanged(ItemEvent e){ //单击列表框 fontset(); } public void valueChanged(ListSelectionEvent e){ //单击下拉列表框 fontset(); } public void actionPerformed(ActionEvent e){ //单击单选按钮，复选按钮，命令按钮等 if(e.getSource()==jrbtn_red){ jl.setForeground(new Color(255,0,0)); } if(e.getSource()==jrbtn_green){ jl.setForeground(new Color(0,255,0)); } if(e.getSource()==jrbtn_blue){ jl.setForeground(new Color(0,0,255)); } if(e.getSource()==jchk_bold){ fontset(); } if(e.getSource()==jchk_italic){ fontset(); } if(e.getSource()==jbtninput){ String str = JOptionPane.showInputDialog("请输入内容："); jl.setText(str); } if(e.getSource()==jbtnexit){ int jopvalue=JOptionPane.showConfirmDialog(null, "您确定要退出吗？", "操作提示", JOptionPane.YES_NO_OPTION); if(jopvalue==JOptionPane.YES_OPTION) System.exit(0); } } void fontset(){ //设置字体 int fv=Font.PLAIN; if(jchk_bold.isSelected()) fv=Font.PLAIN|Font.BOLD; if(jchk_italic.isSelected()) fv=fv|Font.ITALIC; Object folst=jlst.getSelectedValue(); String fs="宋体"; if(!(folst==null)){ fs=folst.toString(); } Object focbo=jcbo.getSelectedItem(); int fn=12; if(!(focbo==null)){ fn=Integer.parseInt(focbo.toString()); } jl.setFont(new Font(fs,fv,fn)); } public static void main(String args[]){ new Anli7(); } }