public class Hello{
public static void main(String[] args){
System.out.println("Hello,world!");
}
}
第二個(gè)Java程序
import javax.swing.JOptionPane;
public class Hello {
public static void main(String[] args) {
JOptionPane.showMessageDialog(null,
"Hello,world!");
}
}
第三個(gè)Java程序
import javax.print.DocFlavor.STRING;
import javax.swing.JOptionPane;
public class Hello {
public static void main(String[] args) {
String name = JOptionPane.showInputDialog("請(qǐng)輸入你的名字");
JOptionPane.showMessageDialog(null, "你好,"+ name + "!");
}
}
