I'm trying to make a GUI in Java

Question

So I am trying to make a GUI in Java. I am pretty new to Java GUIs. So here is my code:

private class thehandler implements  ActionListener {
    public void actionPerformed(ActionEvent event){//this is what is going to handle an event
        String string = "";

        if(event.getSource() == item1)//if they click enter on item1
                string=String.format("field 1: %s", event.getActionCommand());
        else if(event.getSource() == item2)//if they click enter on item2
            string = String.format("field 2: %s", event.getActionCommand());
        else if(event.getSource() == item3)//if they click enter on item3
            string = String.format("field 3: %s", event.getActionCommand());
        else if(event.getSource() == passField)//if they click enter on passField
            string = String.format("Password field is: %s", event.getActionCommand());
        }
}

I get an error on string=String.format("field 1: %s", event.getActionCommand()); and all the other String.format lines. It says "The method format(String, Object[]) in the type String is not applicable for the arguments (String, String)"

I have no clue how to fix this. I just downloaded the JRE and JDK 8 if that helps at all. Thank you!

possible duplicate of [How to use java.String.format?](http://stackoverflow.com/questions/3695230/how-to-use-java-string-format) — Harry Johnston, Apr 20 '14 at 00:03

score 1 · Answer 1 · answered Apr 19 '14 at 20:17

1

Simply convert it to a string

event.getActionCommand().toString()

Alternatively (without stringFormat):

string="field 1:" + event.getActionCommand();

answered Apr 19 '14 at 20:17

meda

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getActionCommand returns a String already. http://docs.oracle.com/javase/6/docs/api/java/awt/event/ActionEvent.html – csvan Apr 19 '14 at 20:23

score 1 · Answer 2 · edited May 23 '17 at 10:32

1

You are using String.format() the wrong way. To see how it should be used (applicable to your use case), consult this question (and answers):

How to use java.String.format in Scala?

edited May 23 '17 at 10:32

Community

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answered Apr 19 '14 at 20:17

csvan

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I'm trying to make a GUI in Java

2 Answers2