UC知道java类问题
来源：百度知道 编辑：UC知道 时间：2024/06/10 09:05:52
/**This application program displays Welcome to Java!
*in a message dialog box.
*/
import javax.swing.JOptionPane;
public class WelcomeInMessageDialogBox {
public static void main(String[] args) {
//Display Welcome to Java! in a message dialog box
JOptionPane.showMessageDialog(null,"Welcome to Java!",
"Example 1.2 Output", JOptionPane.INFORMATION MESSAGE);
}
}
各位高手帮帮忙，这个怎么运行不了啊?
*in a message dialog box.
*/
import javax.swing.JOptionPane;
public class WelcomeInMessageDialogBox {
public static void main(String[] args) {
//Display Welcome to Java! in a message dialog box
JOptionPane.showMessageDialog(null,"Welcome to Java!",
"Example 1.2 Output", JOptionPane.INFORMATION MESSAGE);
}
}
各位高手帮帮忙，这个怎么运行不了啊?
JOptionPane.showMessageDialog(null,"Welcome to Java!",
"Example 1.2 Output", JOptionPane.INFORMATION_MESSAGE);
最后的参数是“JOptionPane.INFORMATION_MESSAGE”，"INFORMATION"和“MESSAGE”中间，你少了下划线。修改后就可正常运行了
很简单，INFORMATION MESSAGE 之间少了个"_"
INFORMATION_MESSAGE OK!
main里边改成这样：
public static void main(String[] args) {
//Display Welcome to Java! in a message dialog box
JOptionPane.showMessageDialog(null,"Welcome to Java!",
"Example 1.2 Output", JOptionPane.INFORMATION_MESSAGE);
}
MESSAGE 前边写个下划线。