How to pass a list of objects as a parameter to a class. Kotlin-CodePudding

How can I pass a list of objecs from main to a class, as parameter?

I need to pass a list of employees to PayrollSystem class as a parameter.

Could someone help, please?

    var index = 0
    val employees = mutableListOf(SalaryEmployee(index, "blablabla", 0))
    val x: String = "0"
    while(true) {
        print("Please enter employee name (0 to quit):")
        var input = readLine()!!.toString()
        if (input != x) {
            index  
            print("Please enter salary:")
            var wage = readLine()!!.toInt()
            employees.add(SalaryEmployee(index, input, wage))
        }
        else {
            employees.removeAt(0)
            employees.forEach {
                SalaryEmployee(it.id, it.name, it.monthly_salary).print()
            }
            break;
        }
    }
}

class PayrollSystem(list: MutableList<employee>) {

    val temp = list
    fun calculatePayroll(){

    }
}

class SalaryEmployee(id: Int, name: String, val monthly_salary: Int) : Employee(id, name){
    override val id = id
    override val name = name
    fun print() {
        println("Id: $id Name: $name Salary: $monthly_salary")
    }
}

open class Employee(open val id: Int, open val name: String) {

}```

CodePudding user response：

Here you are missing val keyword in constructor params.

You can make as var if you are reassigning the list again.

In kotlin constructor, if you don't define it would be a property of the particular class. So its not possible to access outside constructor.

class PayrollSystem(val list: MutableList<Employee>) {

    fun calculatePayroll(){
        //You can access it with list.someThing()
    }
}

CodePudding user response：

Just in case someone will face similar task..

fun main(args: Array<String>) {
    var index = 0
    val employees = mutableListOf(SalaryEmployee(index, "blablabla", 0))
    val x: String = "0"
    while(true) {
        print("Please enter employee name (0 to quit):")
        var input = readLine()!!.toString()
        if (input != x) {
            index  
            print("Please enter salary:")
            var wage = readLine()!!.toInt()
            employees.add(SalaryEmployee(index, input, wage))
        }
        else {
            employees.removeAt(0)
            PayrollSystem(employees).calculatePayroll()
            break;
        }
    }
}

class PayrollSystem(val list: MutableList<SalaryEmployee>) {

    val temp = list
    fun calculatePayroll(){
        temp.forEach{
            println("Employee Payroll\n================")
            println("Payroll for: ${it.id} - ${it.name}\n- Check amount: ${it.monthly_salary}\n")
        }
    }
}

class SalaryEmployee(id: Int, name: String, val monthly_salary: Int) : Employee(id, name){

    fun calculateSalary(): Int {
        return monthly_salary
    }
}

open class Employee(open val id: Int, open val name: String) {

}```