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- if (txtEnergia.getText().toString().equals("0")){
- float u = Float.parseFloat(txtDdp.getText().toString());
- float i = Float.parseFloat(txtCorrenteEletrica.getText().toString());
- float tempo = Float.parseFloat(txtTempo.getText().toString());
- float energia = (u * i * tempo);
- String strDouble = String.format("%.2f", energia);
- lblResultado.setText("E = " + strDouble + " J");
- }
- if (txtDdp.getText().toString().equals("0")){
- float e = Float.parseFloat(txtEnergia.getText().toString());
- float i = Float.parseFloat(txtCorrenteEletrica.getText().toString());
- float tempo = Float.parseFloat(txtTempo.getText().toString());
- float ddp = (e / (i * tempo));
- String strDouble = String.format("%.2f", ddp);
- lblResultado.setText("U = " + strDouble + " V");
- }
- if (txtCorrenteEletrica.getText().toString().equals("0")){
- float e = Float.parseFloat(txtEnergia.getText().toString());
- float u = Float.parseFloat(txtDdp.getText().toString());
- float tempo = Float.parseFloat(txtTempo.getText().toString());
- float corrente = (e / (u * tempo));
- String strDouble = String.format("%.2f", corrente);
- lblResultado.setText("I = " + strDouble + " A");
- }
- if (txtTempo.getText().toString().equals("0")){
- float e = Float.parseFloat(txtEnergia.getText().toString());
- float u = Float.parseFloat(txtDdp.getText().toString());
- float i = Float.parseFloat(txtCorrenteEletrica.getText().toString());
- float segundos = (e / (u * i));
- String strDouble = String.format("%.2f", segundos);
- lblResultado.setText("Tempo = " + strDouble + " s");
- }
- else {
- lblResultado.setText("Campos Inválidos");
- }
- }
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