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- public class Conto {
- private float saldo;
- public Conto (float saldo){
- this.saldo = saldo;
- }
- public boolean preleva(float somma) {
- if ((saldo - somma) > 0) {
- synchronized (this) {
- saldo = saldo - somma;
- }
- return true;
- } else {
- return false;
- }
- }
- }
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