String composing problem ...

[egjava]

Hello Friends!

I have problem with String composition. I want to compose a string with a '+' operator. But the result is not what I would expect.
Here is the example: String date = "16" + "." + "11" + "." + " 2011";
I expect to get a string date written in this form: "16.11.2011", but unfortunatelly the result is "16.112011" so the second dot (.) is missing.

Of course, in real program I use variables intead of "16", "11" and "1911" but the problem is the same!

So, where does the problem lie?

I know that I need to write dot character '.' in this shape '\\." when I wish to search for dot character (.) in string or when I need to parse string with dot character. But I don't know for the reason above.

Thank you for your help in advance,
Ernest

[Petr]

first of all you have to use StringBuilder or StringBuffer for concatenations string because an operation plus is so expensive for your performance.

String date = "16" + "." + "11" + "." + " 2011";

This is correct code. I guess that you miss your dot in another parts your code. Can you show us your code?

[egjava]

My original code is bellow. If you use code inside comment /* */ with '-' instead of '.' everything is OK (16.11.2011), but with '.' I get 16.112011 (dot is missing).

public void nastaviIzbranDatumZaPrisotnost(String imeTabelePrisotnost){ //v obliki 'prisotnost2011_10' to metodo kličemo iz
// class JedPulPregledPrisotnostiPoOsebi->public void zgradiSQLQueryZaTiskanje(){
System.out.println("Ime tabele = " + imeTabelePrisotnost);

String temp1 = imeTabelePrisotnost.replaceFirst("prisotnost","");//iz prisotnost2011_10 dobim 2011_10
String[] temp2 = temp1.split("_");

String leto = temp2[0];
String mesec = temp2[1];

izbranoLeto = leto;
izbranMesec = mesec;

/*
izbranDatumZaPrisotnost = "1-" + mesec;
izbranDatumZaPrisotnost = izbranDatumZaPrisotnost + "-";
izbranDatumZaPrisotnost = izbranDatumZaPrisotnost + leto;
*/

izbranDatumZaPrisotnost = "1." + mesec;
izbranDatumZaPrisotnost = izbranDatumZaPrisotnost + ".";
izbranDatumZaPrisotnost = izbranDatumZaPrisotnost + leto;


System.out.println("Date: " + izbranDatumZaPrisotnost);

}

Best regards,
Ernest

[egjava]

Thank you very much for your help! It's working now. I'm sorry, it was my mistake. Later I realized that some code after this method changed the string.
Best regards,
Ernest