//核心代码String[]sg={"苹果","香蕉","樱桃","山楂"};JComboBox<String>jcb=newJComboBox<String>(sg);完整代码importjava.awt.*;importjavax.swing.*;publicclassMFrameextendsJFrame{publicMFrame(){String[]sg={"苹果","香蕉","樱桃","山楂"};JComboBox<String>jcb=newJComboBox<String>(sg);add(jcb);setLayout(newFlowLayout());//把JFrame设置成流式布局setTitle("测试");//设置窗口标题setSize(220,100);//设置窗口大小setLocationRelativeTo(null);//设置窗口居中setDefaultCloseOperation(EXIT_ON_CLOSE);//设置点击关闭退出jvm虚拟机setVisible(true);//设置窗口可见}publicstaticvoidmain(String[]args){newMFrame();//创建窗口}}
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