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API endpoint how to return a string with new line

In my custom GET endpoint, I would like to return a String but, to "beautify" it, I would like to insert new line for each different information. I've tried with \n\r this way
return "Name of process definition: "+ obj.getString("processDefinitionName") + "\r\n" + "Start time of instance: " + obj.getString("startTime")
+ "||" + "End time of the instance: " + obj.getString("endTime") + "||" + "Total duration time(ms): " + obj.getInt("durationInMillis");
but it only prints a white space and the text is written on the same line. Why is it not working?

You have to use HTML tags to display new line on browser. You can use <br/> tag to add new line. Browser parses your response in HTML form.

How to add line breaks to prompt text in JavaFX?

I have a TextArea that has some prompt text that I want to be split onto a few different lines, however, line breaks don't work in prompt text for some reason.
Code:
TextArea paragraph = new TextArea();
paragraph.setWrapText(true);
paragraph.setPromptText(
"Stuff done today:\n"
+ "\n"
+ "- Went to the grocery store\n"
+ "- Ate some cookies\n"
+ "- Watched a tv show"
);
Result:
As you can see, the text does not line break properly. Does anyone know how to fix this?

The prompt is internally shown by a node of type Text which can handle line breaks. So the interesting question is why don't they show? Reason is revealed by looking at the promptText property: it is silently replacing all \n with empty strings:
private StringProperty promptText = new SimpleStringProperty(this, "promptText", "") {
#Override protected void invalidated() {
// Strip out newlines
String txt = get();
if (txt != null && txt.contains("\n")) {
txt = txt.replace("\n", "");
set(txt);
}
}
};
A way around (not sure if it is working on all platforms - does on my win) is to use the \r instead:
paragraph.setPromptText(
"Stuff done today:\r"
+ "\r"
+ "- Went to the grocery store\r"
+ "- Ate some cookies\r"
+ "- Watched a tv show"
);

cannot find symbol method append (String)

I don't get it why it says it cannot find symbol append.
do i need to use Stringbuffer? i got this code on a tutorial for receipts from youtube, and the uploader disabled comments so I can't ask him directly. please help me. Im still an amateur at java.
Tell me if I need to post my whole code or what code would you want to see to see errors. thanks in adv.
Calendar timer = Calendar.getInstance();
timer.getTime();
SimpleDateFormat tTime = new SimpleDateFormat("HH:mm:ss");
tTime.format(timer.getTime());
SimpleDateFormat Tdate = new SimpleDateFormat("dd-MMM-yyyy");
Tdate.format(timer.getTime());
jtxtReceipt.append("\ Water Station Receipt:\n" +
"Reference:\t\t\t" + refs +
"\n=========================================\n" +
"Mineral:\t\t\t" + jtxtMineral.getText() + "\n\n" +
"Purified:\t\t\t" + jtxtPurified.getText() + "\n\n" +
"Travel:\t\t\t" + jtxtTravel.getText() + "\n\n" +
"VAT:\t\t\t" + jtxtVat.getText() + "\n"+
"\n========================================\n" + "\n" +
"Tax:\t\t\t" + jtxtTax2.getText() + "\n" +
"Subtotal:\t\t\t" + jtxtSubTotal.getText() + "\n" +
"Total:\t\t\t" + jtxtTotal.getText() + "\n" +
"===========================================" +
"\nDate:" + Tdate.format(timer.getTime()) +
"\ntTime:" + tTime.format(timer.getTime()) +
"\n\t\tThank you ");

The append method doesn't exist in the String class. You can either user a StringBuilder to do the job, or if it's a light concatenation, just use the + operator

The append method doesn't work on TextField Palette. So, if You're on TextField Palette, replacing that with TextArea Palette should solve the problem.

How to SELECTIVELY bold text in a TextView

I have this statement:
s = s + "Id: " + lc.getID() + " Name: " + lc.getName() + "\n"
+ " Phone Number: " + lc.getPhone() + " Email: " + lc.getEmail() + "\n"
+ " Description: " + lc.getDescription() + "\n\n"
that prints this out:
Id: 1 Name: Eric
Phone Number: 8294038 Email: foo#gmail.com
Description: Cool guy Eric
I want to Bold only the titles (Id, Name, etc).
I tried this:
s = s + Html.fromHtml(" <b> Id: </b>" + lc.getID() + " <b> Name: </b>" + lc.getName() + "\n"
+ " Phone Number: " + lc.getPhone() + " Email: " + lc.getEmail() + "\n"
+ " Description: " + lc.getDescription() + "\n"
+ "\n\n");
But not only does it not bold, but it takes away the new lines (\n). Any ideas on how to get this done? Thanks.

Html.fromHtml() returns a Spanned object, designed to be put directly into a TextView or similar widget.
A Spanned is not a String.
By doing s = s + Html.fromHtml(...), you are saying "please parse this HTML into a Spanned, then throw out all the formatting to give me a String that I can concatenate onto some other String". That's not what you want -- you want to keep the formatting. But a Java String does not have formatting, and so ordinary string concatenation has no way to keep it.
Beyond that, as Manishika pointed out, newlines are ignored in HTML anyway, as you use HTML elements for vertical whitespace.
Your options include:
Generate a complete HTML snippet -- including whatever it is you are trying to concatenate it to -- and then use Html.fromHtml() on the entire thing. You may wish to use a template engine (e.g., jmustache) for that, or String.format(). Or, use StringBuilder, rather than lots of + operations (less memory churn, faster performance). Be sure to use <br/> or <p> for your line breaks/paragraph delimiters.
Use SpannableStringBuilder to assemble the string and its formatting from component parts.
Use TextUtils.concat(s, Html.fromHtml(...)) instead of s + Html.fromHtml(...), as concat() will maintain the spans that implement the formatting. While the implementation of Spanned returned by fromHtml() is not a String, both it and String are a CharSequence, and hence work with concat().

It will require a little bit of parsing on your end, but you definitely want to look into SpannableStrings.
For example, let's say I have the following string:
String s = "How now brown cow";
I would then turn it into a SpannableString by simply feeding the string to the constructor as follows:
SpannableString ss = new SpannableString(s);
From there you need your stylization with the spanned area. For this, I'll just use SubscriptSpan, though if you wish to make your own you can simply make your own class extending CharacterStyle and override the updateDrawState(TextPaint ds) method. The following is how you can set you span:
/ *
* the first argument is the span effect you want, the second and third
* are the start and end indices, respectively, and the last argument is
* for setting a flag, which you probably won't need.
*/
ss.setSpan(new SubscriptSpan(), 0, 2, 0);
And now you can just put your string straight into the TextView and it should appear how you want, like so:
myTextView.setText(ss);

Aligning a String in JOptionPane

I have a string that I want to display in a JOptionPane.
String info = "Name:" + _name + "\n" +
"Phone:" + _phone;
I tried to add \t but it didn't work.
I tried also to
int choose = JOptionPane.showConfirmDialog(this,new JTextArea(info),"XXX",0);
But it doesn't look good.
Are there another ways to do that? (If you know about a solution where I can use something like \t it will be very usefull for me)
* In this specific example I can manually align it, but I'm looking for a general solution.

HTML formatting could help:
String info = "Name:" + _name + "<br>" +
"Phone:" + _phone + "<br>";
int choose =
JOptionPane.showConfirmDialog(this, "<html>" + info + "</html>", "XXX", 0);
Another option is to use a JTable in the JOptionPane dialog as shown in this solution.

I had something like that and it worked:
String st = "<table border = \"0\">" +
"<tr><td>VALUE1: </td><td>" + _value2 + "</td></tr>"+
"<tr><td>VALUE2: </td><td>" + _value4 + "</td></tr>" +
//.....
"</table>";