write to txt file

Hello guys. I have create two txt files and I wan to parse things there.

Code:

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FileWriter outFile1 = new FileWriter("newFaces.txt", true);
        FileWriter outFile2 = new FileWriter("newVertices.txt", true);
        PrintWriter out1 = new PrintWriter(outFile1);
        PrintWriter out2 = new PrintWriter(outFile2);

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and I want to parse some variables inside a for loop but i want iteration to add new lines in the txt(to append lines).

Code:

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for (int i=0;i<4; i++){ //for example
                      out2.append(newvertex1+" "+newvertex2+" "+ newvertex3);
                      out2.println();

                      out2.close();
                     
                      out1.append(aString+" "+aString1+" "+ aString3);
                      out1.println();
                      out1.append(aString+" "+aString1+" "+ aString4);
                      out1.println();
                      out1.append(aString+" "+aString2+" "+ aString3);
                      out1.println();
                      out1.append(aString+" "+aString2+" "+ aString4);
                      out1.println();
                      out1.close();

}

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This work like a charm only for the first iteration. In the end of the loop i ve onlyl the data of the first iteration. Have you any idea upon this matter? What i m doing wrong?

Why exactly are you closing your PrintWriter's in your loop? Close your PrintWriter's when the loop is done; that's the reason why only your first iteration is being written.

Hmm you are so true!!! Thank you.