import java.util.*;

public abstract class Client {

private static final int MAX_POLICIES_PER_CLIENT = 10;

private static int NEXT_CLIENT_ID = 1;

private String name;
private int id;
protected Policy[] policies;
protected int numPolicies;

public Client(String n) {
   name = n;
   id = NEXT_CLIENT_ID++;
   policies = new Policy[MAX_POLICIES_PER_CLIENT];
   numPolicies = 0;
}

public String getName() {
   return name;
}

public int getId() {
   return id;
}

public Policy[] getPolicies() {
   return policies;
}

public int getNumPolicies() {
   return numPolicies;
}

public String toString() {
   return String.format("%s: %06d amount: %s",
            this.getClass().getCanonicalName() ,id, name);
}

public float totalCoverage() {
   float total = 0;
   for (int i = 0; i < numPolicies; i++) {
         total += policies[i].getAmount();
   }
   return total;
}

public Policy addPolicy(Policy p) {
   if (numPolicies >= policies.length) {
         return null;
   }
   policies[numPolicies] = p;
   numPolicies++;
   return p;
}

public Policy openPolicyFor(float amt) {
   return addPolicy(new Policy(amt));
}

public Policy openPolicyFor(float amt, float rate) {
   return addPolicy(new DepreciatingPolicy(amt, rate));
}

public Policy openPolicyFor(float amt, Date expire) {
   return addPolicy(new ExpiringPolicy(amt, expire));
}

public Policy getPolicy(int polNum){
   for (int i = 0; i < numPolicies; i++) {
         if (polNum == policies[i].getPolicyNumber()) {
            return policies[i];
         }
   }
   return null;
}

public boolean cancelPolicy(int polNum) {
   for (int i = 0; i < numPolicies; i++) {
         if (polNum == policies[i].getPolicyNumber()) {
            policies[i] = policies[numPolicies - 1];
            numPolicies--;
            return true;
         }
   }
   return false;
}

public abstract float makeClaim(int polNum) ;
}

Design, implement and test a Java application for order management...