Challenge: Building a Server Retry Mechanism
Task
Swipe to start coding
Implement a program that attempts to connect to a server up to 5 times. If the connection is successful, the program prints a success message. If it fails after 5 attempts, it prints an error message.
- Create a method called
tryConnect(int successfulAttempt)that returns abooleanindicating whether the connection succeeded. - Inside this method:
- Start a
do-whileloop that runs up to 5 times. - On each iteration, increment the retry counter.
- If the retry count equals the given
successfulAttempt, print a success message and returntrue. - If not, print
"Server unavailable, retrying...".
- Start a
- If the loop finishes without success, return
false. - In the
mainmethod, calltryConnect(...)with a test value and print"Failed to connect to the server after 5 attempts."if the result isfalse.
Solution
solution
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package com.example;
public class Main {
public static boolean tryConnect(int successfulAttempt) {
int retryCount = 0;
do {
retryCount++;
if (retryCount == successfulAttempt) {
System.out.println("Successfully connected to the server.");
return true;
}
System.out.println("Server unavailable, retrying...");
} while (retryCount < 5);
return false;
}
public static void main(String[] args) {
boolean connected = tryConnect(3); // simulate successful attempt on 3rd try
if (!connected) {
System.out.println("Failed to connect to the server after 5 attempts.");
}
}
}
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Section 3. Chapter 4
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package com.example;
public class Main {
public static boolean tryConnect(int successfulAttempt) {
int retryCount = 0;
do {
___
} while (retryCount < ___);
return ___;
}
public static void main(String[] args) {
boolean connected = tryConnect(3); // simulate successful attempt on 3rd try
if (!connected) {
System.out.println("Failed to connect to the server after 5 attempts.");
}
}
}
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