can anybody help me with this? condiser the following class: public class Worker

Question

can anybody help me with this?

condiser the following class:

public class Worker {

private String name;
private double rate;
private int age;

public Worker(String name, double rate, int age) {
this.name = name;
this.rate = rate;
this.age = age;
}

public String getName() {
return name;
}

public double getRate() {
return rate;
}

public int getAge() {
return age;
}

public void setName(String name) {
this.name = name;
}

public void setRate(double rate) {
this.rate = rate;
}

public void setAge(int age) {
this.age = age;
}


}

next write a Test class for the following tasks:

1- implment worker class. 2- declare an arraylist of Worker objects in other class call it TestClass.

3- Add 100 Worker objects to the Arraylist, usng the forumla

if/is odd number, name of i-th worker is "Amr_i"(eg.1st worker name is ("Amr_1")

if/is even number, name of i-th worker is "sam_i"(eg.2nd worker name is ("sam_2)

age of i-th worker is = 20+(i/10%)

rate of i-th worker is =25.0-i/100

I solved the first 3 taskes and i couldn't solve the rest

class TestClass {

public static void mian(String[] args) {
  
List<Worker> workerList = new ArrayList<>();

for (int i = 0; i < 1000; i++) {
String name;
int age;
double rate;
if (i % 2 == 0) {
name = "Amr_" + String.valueOf(i);
} else {
name = "sam_" + String.valueOf(i);
}
age = 20 + (i / 10);
rate = 25.0 - i / 100.0;
Worker w = new Worker(name, rate, age);
workerList.add(w);
}
}

so can u solve the rest for me

1-print the average age of all workers i having name "Sam_i" (i.e,the even workers)

2--print the average rate of all workers i having name "Amr" (i.e,the even workers)

3- remove all the worers from the the ArrayList whose age is greater than 30.

4- increase the rate of all workers in the arraylist whose rate is less than 10 by 1.

Explanation / Answer

Here is the update for you:

import java.util.*;
class WorkerTestClass {
public static void main(String[] args) {
  
List<Worker> workerList = new ArrayList<>();
for (int i = 0; i < 1000; i++) {
String name;
int age;
double rate;
if (i % 2 == 0) {
name = "Amr_" + String.valueOf(i);
} else {
name = "sam_" + String.valueOf(i);
}
age = 20 + (i / 10);
rate = 25.0 - i / 100.0;
Worker w = new Worker(name, rate, age);
workerList.add(w);
}
//1-print the average age of all workers i having name "Sam_i" (i.e,the even workers)
double avgAge = 0;
for(int i = 1; i < workerList.size(); i+= 2)
   avgAge += workerList.get(i).getAge();
avgAge /= workerList.size();
System.out.println("The average age of odd workers is: " + avgAge);
//2--print the average rate of all workers i having name "Amr" (i.e,the even workers)
double avgRate = 0;
for(int i = 0; i < workerList.size(); i += 2)
   avgRate += workerList.get(i).getRate();
avgRate /= workerList.size();
System.out.println("The average rate of even workers is: " + avgRate);
//3- remove all the worers from the the ArrayList whose age is greater than 30.
for(int i = 0; i < workerList.size(); i++)
   if(workerList.get(i).getAge() > 30)
       workerList.remove(i);
//4- increase the rate of all workers in the arraylist whose rate is less than 10 by 1.
for(int i = 0; i < workerList.size(); i++)
   if(workerList.get(i).getRate() < 10)
       workerList.get(i).setRate(workerList.get(i).getRate() + 1);              
}
}

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