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- String correct = "";
- while(true){
- try {
- String inputX = JOptionPane.showInputDialog("введите" + correct + "X член уравнения")
- Double parceX = Double.parceDouble(inputX);
- break;
- } catch(java.lang.NumberFormatException e) {
- correct = "корректно"
- }
- }
- correct = "";
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