Java程序在比较两个文件时找出错误列,可以通过以下步骤实现:
以下是Java程序示例代码:
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
public class FileComparator {
private static final Logger LOGGER = Logger.getLogger(FileComparator.class.getName());
public static void main(String[] args) {
String file1Path = "file1.txt";
String file2Path = "file2.txt";
try (BufferedReader reader1 = new BufferedReader(new FileReader(file1Path));
BufferedReader reader2 = new BufferedReader(new FileReader(file2Path))) {
String line1, line2;
int lineNumber = 1;
while ((line1 = reader1.readLine()) != null && (line2 = reader2.readLine()) != null) {
if (!line1.equals(line2)) {
String[] columns1 = line1.split(",");
String[] columns2 = line2.split(",");
for (int i = 0; i < columns1.length; i++) {
if (!columns1[i].equals(columns2[i])) {
LOGGER.log(Level.INFO, "Error at line {0}, column {1}", new Object[]{lineNumber, i + 1});
}
}
}
lineNumber++;
}
LOGGER.log(Level.INFO, "File comparison completed.");
} catch (IOException e) {
LOGGER.log(Level.SEVERE, "An error occurred while comparing files.", e);
}
}
}
请注意,以上示例代码仅演示了基本的文件比较过程,并输出错误列的日志信息。实际应用中,你可能需要根据具体需求进行适当的修改和扩展。
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