?? formattester.java
字號:
package com.oreilly.tiger.ch09;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class FormatTester {
public static void main(String[] args) {
String filename = args[0];
try {
File file = new File(filename);
FileReader fileReader = new FileReader(file);
BufferedReader reader = new BufferedReader(fileReader);
String line;
int i = 1;
while ((line = reader.readLine()) != null) {
System.out.printf("Line %d: %s%n", i++, line);
}
} catch (Exception e) {
System.err.printf("Unable to open file named '%s': %s",
filename, e.getMessage());
}
}
}
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