Server Uptime CSV Log

12 points

In UptimeReader.java, write:

public static double computeAverageUptime(String filename) throws FileNotFoundException

File format: ClusterName,NodeID,UptimePercentage
Skip line 1 (header: ClusterName,NodeID,UptimePercentage).
Parse UptimePercentage as a double and return the average.
If file contains only the header, return 0.0.
If file does not exist, throw FileNotFoundException. Use try-with-resources.

Sample Run

// cluster.csv:
// ClusterName,NodeID,UptimePercentage
// North,node-01,99.95
// North,node-02,99.80
// South,node-03,98.50
// South,node-04,99.75
System.out.printf("Avg Uptime: %.2f%%\n", UptimeReader.computeAverageUptime("cluster.csv"));

Expected Output

Avg Uptime: 99.50%

Test Cases

VisibleTest 1 [Visible] (Sample Run)
4 nodes averaged accurately to 99.50%.
Hidden7 hidden tests
Additional edge cases run when you grade, but their details are not shown.

Java 25

stdin — one Scanner input per line

Press Compile & Run to compile and execute your code (OpenJDK 25). Output appears here.