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Erro ao inserir na BD

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Boa tarde.
tenho um problema a inserir um valor no banco de dados através de uma Jtextfield.
alguem pode ajudar?
codigo que tenho feito :


NumberFormat nf = NumberFormat.getInstance();

float a; a=(Float.parseFloat(txtutilccaixa.getText()) - Float.parseFloat(txtutilrdt.getText())); txtutildiferenca.setText(String.valueOf(nf.format(a)));

Erro: Exception in thread “AWT-EventQueue-0” java.lang.NumberFormatException: For input string: "-153,15"

PS: -153,15 é o resultado da soma dá no calculo que estou a fazer

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O teu problema está na representação do número. Estás a passar o valor usando a virgula como separador decimal e tem de ser o ponto.

10 REM Generation 48K!
20 INPUT "URL:", A$
30 IF A$(1 TO 4) = "HTTP" THEN PRINT "400 Bad Request": GOTO 50
40 PRINT "404 Not Found"
50 PRINT "./M6 @ Portugal a Programar."


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