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solution #1629

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solution #1629

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55cef96
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VitalikK5 Feb 15, 2025
0d86bb9
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VitalikK5 Feb 15, 2025
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34 changes: 33 additions & 1 deletion src/main/java/core/basesyntax/WorkWithFile.java
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Original file line number Diff line number Diff line change
@@ -1,7 +1,39 @@
package core.basesyntax;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;

public class WorkWithFile {
public void getStatistic(String fromFileName, String toFileName) {
int supplyTotal = 0;
int buyTotal = 0;

try {
List<String> lines = Files.readAllLines(Path.of(fromFileName));
for (String line : lines) {
String[] parts = line.split(",");
int sum = Integer.parseInt(parts[1]);
if(parts[0].equals("supply")) {
supplyTotal += sum;
} else if (parts[0].equals("buy")) {
buyTotal += sum;
}
}
} catch (IOException e) {
throw new RuntimeException(e);
}
int result = supplyTotal - buyTotal;

String report = "supply," + supplyTotal + System.lineSeparator()
+ "buy," + buyTotal + System.lineSeparator()
+ "result," + result;

try {
Files.write(Path.of(toFileName), report.getBytes());
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Consider using StandardOpenOption.CREATE and StandardOpenOption.TRUNCATE_EXISTING with Files.write to ensure the file is created if it doesn't exist and truncated if it does. This will make your file writing operation more robust.

} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
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