
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
int n = Integer.parseInt(tfInput.getText());
int sum1 = 0, sum2 = 0;
for (int i = 1; i <= n; i++) {
sum1 += (Math.pow(i, 2));
sum2 += (Math.pow(i, 3));
lblResult1.setText(String.valueOf(sum1));
lblResult2.setText(String.valueOf(sum2));
}
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