I have some silly problem. I need to "out.print" the results to a JTextArea just as it does with a console:
for (int m=0;  m<mieszkanie.length;  m++) {
    boolean test = false;
    String test1 = mieszkanie[m];
    for (int n=0;n<mieszkanieID.length;n++) {
        String test2 = mieszkanieID[n];
        if (test1.equals(test2)){
            test = true;
            break;
        }
    }
    if (test==false) {
        System.out.println(test1);
        //JTextArea = "poleStatusu"
    }
}
With System.out.println() it of course prints every single "false", but when I use 
poleStatusu.setText(test1) it just prints the last "false".
What I need is just something to print every "false" in the poleStatusu text area - it doesn't matter if it's going to connect the Strings or to make JTextArea as a console. I know these methods exist, but I'm not sure how to implement them correctly.