Java Swing实战（三）文本组件JTextField和密码组件JPasswordField

接下来添加文本组件jtextfield和密码组件jpasswordfield。

/**
 * @author: lishuai
 * @date: 2018/11/26 13:51
 */
public class weimingsyncapplets {
    public static void main(string[] args) {
        // 面板组件
        jpanel taskpanel = new jpanel();
        jpanel dbpanel = new jpanel();
        jtabbedpane tabbedpane = buildjtabbedpane(taskpanel, dbpanel);
        buildframe(tabbedpane);
    }

    private static jtabbedpane buildjtabbedpane(jpanel taskpanel, jpanel dbpanel) {
        // 选项卡面板
        jtabbedpane tabbedpane = new jtabbedpane();
        // 通过borderfactory来设置边框的特性
        tabbedpane.setborder(borderfactory.createemptyborder(10, 10, 10, 10));
        tabbedpane.add("执行任务", taskpanel);
        tabbedpane.add("数据源配置", dbpanel);

        // 下拉框
        dbpanel.add(buildjlabel("数据库类型", 10, 20, 80, 25));
        string dbs[] = {"mysql", "oracle", "sqlserver"};
        dbpanel.add(buildjcombobox("mysql", "mysql", dbs, 0, 100, 20, 165, 25));

        // 文本框
        dbpanel.add(buildjlabel("用户名", 10, 50, 80, 25));
        jtextfield dbusername = buildjtextfield("dbusername", "dbusername", 20, 100, 50, 165, 25);
        dbpanel.add(dbusername);

        // 密码
        dbpanel.add(buildjlabel("密码", 10, 80, 80, 25));
        jpasswordfield dbpassword = buildjpasswordfield("dbpassword", "dbpassword", 20, 100, 80, 165, 25);
        dbpanel.add(dbpassword);

        return tabbedpane;
    }

    private static jpasswordfield buildjpasswordfield(string defaultvalue, string name, int columns, int x, int y, int width, int height) {
        jpasswordfield jpasswordfield = new jpasswordfield(columns);
        jpasswordfield.settext(defaultvalue);
        jpasswordfield.setname(name);
        jpasswordfield.setbounds(x, y, width, height);
        return jpasswordfield;
    }

    private static jtextfield buildjtextfield(string defaultvalue, string name, int columns, int x, int y, int width, int height) {
        jtextfield text = new jtextfield(columns);
        text.settext(defaultvalue);
        text.setname(name);
        text.setbounds(x, y, width, height);
        return text;
    }

    private static jcombobox buildjcombobox(object selecteditem, string name, string[] elements, int selectedindex, int x, int y, int width, int height) {
        defaultcomboboxmodel codetypemodel = new defaultcomboboxmodel();
        // elements 下拉框中的选项
        for (string element : elements) {
            codetypemodel.addelement(element);
        }
        jcombobox codetypebox = new jcombobox(codetypemodel);
        codetypebox.setname(name);
        // 默认选中的下拉框选项
        codetypebox.setselecteditem(selecteditem);
//        codetypebox.setselecteditem(selectedindex);
        codetypebox.setbounds(x, y, width, height);
        // 添加下拉框事件监听器
        codetypebox.additemlistener(new itemlistener() {
            @override
            public void itemstatechanged(itemevent e) {
                if (e.getstatechange() == itemevent.selected) {
                    // 选择的下拉框选项
                    system.out.println(e.getitem());
                }
            }
        });
        return codetypebox;
    }

    private static jlabel buildjlabel(string name, int x, int y, int width, int height) {
        jlabel label = new jlabel(name);
        label.setbounds(x, y, width, height);
        return label;
    }

    private static void buildframe(jcomponent component) {
        // 窗体容器
        jframe frame = new jframe("数据同步工具");
        frame.add(component);
        //  jframe.exit_on_close  退出
        //  jframe.hide_on_close  最小化隐藏
        frame.setdefaultcloseoperation(jframe.hide_on_close);
        // 设置布局
        frame.getcontentpane().setlayout(new borderlayout());
        frame.getcontentpane().add(borderlayout.center, component);
        // 设置窗口最小尺寸
        frame.setminimumsize(new dimension(1060, 560));
        // 调整此窗口的大小，以适合其子组件的首选大小和布局
        frame.pack();
        // 设置窗口相对于指定组件的位置
        frame.setlocationrelativeto(null);
        frame.setvisible(true);
        // 设置窗口尺寸是否固定不变
        frame.setresizable(true);
    }

}

效果如图：