浮点数判断

public boolean accountBalance(double accountBalance){
     
     String regex1 ="[1-9]+\\d+[.][0]";
     String regex2 ="[0][.]\\d+";
     String regex3="[1-9]+[.]\\d+";
     String account=String.valueOf(accountBalance);
    double newbalance=Double.parseDouble(account);
     //System.out.println("account-----------"+account);
    // System.out.println("newbalance-----------"+newbalance);

     if(account.matches(regex1)||account.matches(regex2)||account.matches(regex3)){

         return true;
     }
    
    return false;
     
 }