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

import java.io.*;
import java.util.*;

class Worker {

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

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;
}
}

public class TestClass{
  
public static void main(String[] args) {
List<Worker> workerList = new ArrayList<Worker>();
TestClass ob = new TestClass();
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);
}
ob.printOddWorkerAvgRate(workerList);
ob.printEvenWorkerAvgAge(workerList);
ob.removeWorker(workerList, 30);
ob.increaseRate(workerList, 1);
}

public void printOddWorkerAvgRate(List<Worker> workerList){
int sum = 0, j = 0;
float avg;
for(Worker element : workerList){
if(element.getName().startsWith("Amr")){
sum += element.getRate();
j++;
}
}
avg = (float)sum / j;
System.out.println("The avg rate of worker with name starting with Amr is " + avg);
}
  
public void printEvenWorkerAvgAge(List<Worker> workerList){
int sum = 0, j = 0;
float avg;
for(Worker element : workerList){
if(element.getName().startsWith("Sam")){
sum += element.getAge();
j++;
}
}
avg = (float)sum / j;
System.out.println("The avg age of worker with name starting with Sam is " + avg);
}

public void removeWorker(List<Worker> workerList, int age){
int i;
for(Worker element : workerList){
if(element.getAge() > age)
//workerList.remove(element);
i = 3;
}
}
  
public void increaseRate(List<Worker> workerList, int rate){
for(Worker element : workerList){
if(element.getRate() < rate)
element.setRate(element.getRate()+1);
}
}
}

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