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[英]How can I ask hibernate to make a Database for me? (maven & java)
[英]How can I ask the user for some numbers in Java ME?
我是Java Me的新手(第一次)。 我希望我的程序向用戶詢問IP地址。 因此,四個數字介於0到255之間。這並不困難,但是正如我所說,我是Java Me的新手。
您希望用戶如何輸入IP地址? 您是否要使用TextField例如? 您可以執行以下操作:
import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
public class GetIPAddress extends MIDlet implements CommandListener {
private Display display;
private Form form = new Form("IP Adress Input");
private Command submit = new Command("Submit", Command.SCREEN, 1);
private Command exit = new Command("Exit", Command.EXIT, 1);
private TextField textfield = new TextField("IP Address:", "", 30, TextField.ANY);
public GetIPAddress() {
display = Display.getDisplay(this);
form.addCommand(exit);
form.addCommand(submit);
form.append(textfield);
form.setCommandListener(this);
}
public void startApp() {
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command command, Displayable displayable) {
if (command == submit) {
// Do the manipulation of the IP address here.
// You can retrieve it using textfield.getString();
form.removeCommand(submit);
} else if (command == exit) {
destroyApp(false);
notifyDestroyed();
}
}
}
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