Auf Thema antworten

Indem du versuchst du verstehen was der Code macht,.

[code=Java]

  for (Transaction transaction : transactions) {

                      jTextPane1.setText(transactions.toString());

                }

[/code]

  jTextPane1.setText(transactions.toString());

-->

  jTextPane1.setText(transaction.toString());

(wobei das setText wenig Sinn macht innerhalb einer Schleife.....)