Exercise Operator Overloading in Groovy Scripting groovy training telugu 17

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[Exercise] Operator Overloading

In this exercise we are going to learn how to implement operator overloading on our own classes.

Create a new script called AccountDemo.groovy

Create a class called Account

Create a property called balance of type BigDecimal and initialize it to 0

Create a property called type of type String

Create a deposit method that will add to the balance

Create a withdraw method that will subtract from the balance

no need for this to check if they have that amount available (keep it simple)

With that code in place the following lines should work

Account checking = new Account(type:"Checking")

checking.deposit(100.00)

Account savings = new Account(type:"Savings")

savings.deposit(50.00)

We know that the String class has on overloaded method called plus that allows us to concatenate 2 strings right? So how could we take that logic and make it so we can make the following lines work.

BigDecimal total = checking + savings

println total

//Coding 

@groovy.transform.ToString

class Account{

BigDecimal balance=0.0

String type

BigDecimal deposit(BigDecimal amount){

balance +=amount

}

BigDecimal withdraw(BigDecimal amount){

balance -=amount

}

BigDecimal plus(Account,account){

this.balance=account.balance

}

}

Account checking =new Account(type:"Checking")

checking.deposit(100.00)

Account saving =new Account(type:"Saving")

saving.deposit(50.00)

println checking

println saving

BigDecimal total= checking +saving

println total