jac_usai

Untitled

Jun 16th, 2019
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Java 0.39 KB | None | 0 0
  1. public class Conto {
  2.    
  3.     private float saldo;
  4.    
  5.     public Conto (float saldo){
  6.         this.saldo = saldo;
  7.     }
  8.    
  9.     public boolean preleva(float somma) {
  10.  
  11.         if ((saldo - somma) > 0) {
  12.             synchronized (this) {
  13.                 saldo = saldo - somma;
  14.             }
  15.             return true;
  16.         } else {
  17.             return false;
  18.         }
  19.     }
  20. }
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