Java system.out.print to print JOptionPane.ShowMessageDialog

Question

How can I print system.out.print message into a JOptionPane.ShowMessageDialog I need it to run through the for loop and then outside the for loop I need it to display inside of

Answer 1

Try to write output to StringBuilder

StringBuilder sb = new StringBuilder() for (int i = 0; i < numberOfLoans; i++) {

    sb.append(String.format("%d\t%s\t%d   %.2f   %.2f\n", sellingPrice, downPayment, loanAmount, annualInterestRatesArray[i], numberOfYearsArray[i], monthlyPaymentArray[i]));

}
String toDisplay=sb.toString();

Answer 2

Set the printer used by 'System.out' with your own. Either redirect to a string writer or create your own Printer implementation and use it instead to collect all the printed output in a 'StringBuilder'. Once outside of the loop take the collected 'String' and display it on the dialog.

I would recommend against using 'System.out.println' altlogether, but I assume you have no other choice.

Answer 3

Use a StringBuffer.

 StringBuffer sb=new StringBuffer();
 for (int i = 0; i < numberOfLoans; i++) {
      sb.append(your_string);
 }
 JOptionPane.showMessageDialog(parent,sb.toString());