Program to find electricity bill in JAVA using if and else conditions

class electricity
{
Public static Void main(String args[])
{
int unit=Integer.parseInt(args[1]);
String name=args[0];
float rupees=0.0f;
{
if (unit<100)
rupees=rupees +unit*.40;
else if(unit>100 && unit<300)
rupees=rupees+(unit-100)*.50;
else (unit>300)
rupees=rupees+(unit-300)*.60;
}
if(rupees<250)
{
System.out.println("name="+name);
System.out.println("unit="+unit+"rupees="+rupees);
}
else
{
rupees=rupees+(rupees*15)/100;
System.out.println("name="+name);
System.out.println("unit="+unit+"rupees="+rupees);
}}}