如何从一个ArrayList包含textArea的setText？ [英] How to setText in a textArea from an ArrayList?

问题描述

我有一个ArrayList 的ArrayList＆LT;串GT; externalDataList =新的ArrayList＆LT;＆GT;（1600）; ，我想在textarea的第一个3串来显示，但我不能赢得成功：

I have an ArrayList ArrayList<String> externalDataList = new ArrayList<>(1600);and I would like to display in a textArea first 3 strings, but I can't succed:

下面是我的code

textareaShowPreview.setPrefRowCount(3);

Iterator<String> it = externalDataList.iterator();
       int tot = 0;
       while(it.hasNext() && tot<3){
           String element = it.next();
           textareaShowPreview.setText(element + "\n");
           System.out.println("elements are: " + element);
           tot++;
       }

sout将正确打印第3串

The sout correctly print first 3 strings

element are: 23/05/2007 ,30.9455,31.2545,30.9091,30.9545,7518142
element are: 24/05/2007 ,30.6545,31.0909,30.5364,30.6909,12851606
element are: 25/05/2007 ,30.6636,30.8545,30.4818,30.8091,9392088

但在textarea的我只有第一个

but in textArea I have only first one

我如何要修改我的code在TEXTAREA显示所有三根弦，每行一个字符串？

How do I have to modify my code to show in textArea all three strings, one string per row?

推荐答案

使用AppendText通过替代的setText <一个href=\"http://docs.oracle.com/javafx/2/api/javafx/scene/control/TextInputControl.html#appendText%28java.lang.String%29\"相对=nofollow>这里是一个链接。

Use appendText instead of setText here is a link.

本的setText，删除previous文本，并设置你给它的文本。追加保持在你的文本区的当前文本。

The setText, delete the previous text and set the text you are giving to it. The append keep the current text in your text area.

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