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GeezerVison is showing github.com — HackerRank-Java-Solutions/Advanced/Java Annotations.java at main · Pavith19/HackerRank-Java-Solutions

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Java Annotations.java

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/* *
* Author: Pavith Bambaravanage
* URL: https://github.com/Pavith19
* */
/*JAVA-08*/
import java.lang.annotation.*;
import java.lang.reflect.*;
import java.util.*;
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@interface FamilyBudget {
String userRole() default "GUEST";
int budgetLimit() default 0;
}
class FamilyMember {
@FamilyBudget(userRole = "SENIOR", budgetLimit = 100)
public void seniorMember(int budget, int moneySpend) {
System.out.println("Senior Member");
System.out.println("Spend: " + moneySpend);
System.out.println("Budget Left: " + (budget - moneySpend));
}
@FamilyBudget(userRole = "JUNIOR", budgetLimit = 50)
public void juniorUser(int budget, int moneySpend) {
System.out.println("Junior Member");
System.out.println("Spend: " + moneySpend);
System.out.println("Budget Left: " + (budget - moneySpend));
}
}
public class Solution {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int testCases = Integer.parseInt(in.nextLine());
while (testCases > 0) {
String role = in.next();
int spend = in.nextInt();
try {
Class annotatedClass = FamilyMember.class;
Method[] methods = annotatedClass.getMethods();
for (Method method : methods) {
if (method.isAnnotationPresent(FamilyBudget.class)) {
FamilyBudget family = method
.getAnnotation(FamilyBudget.class);
String userRole = family.userRole();
int budgetLimit = family.budgetLimit();
if (userRole.equals(role)) {
if(spend <= budgetLimit){
method.invoke(FamilyMember.class.newInstance(),
budgetLimit, spend);
}else{
System.out.println("Budget Limit Over");
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
testCases--;
}
}
}
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