My code works as the example shows. But i still get an error? Anyone knows why?
package com.codegym.task.task19.task1916;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Tracking changes
*/
public class Solution {
public static List<LineItem> lines = new ArrayList<>();
public static void main(String[] args) throws IOException {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
String file1 = bufferedReader.readLine();
String file2 = bufferedReader.readLine();
bufferedReader.close();
List<String> list1 = new ArrayList<>();
List<String> list2 = new ArrayList<>();
try (BufferedReader br = new BufferedReader(new FileReader(file1))) {
String line;
while ((line = br.readLine()) != null) {
list1.add(line);
}
}
try (BufferedReader br = new BufferedReader(new FileReader(file2))) {
String line;
while ((line = br.readLine()) != null) {
list2.add(line);
}
}
for (int i = 0; i < list1.size(); i++) {
String s = list1.get(i);
String s1 = list2.get(i);
if (s.equals(s1)) {
lines.add(new LineItem(Type.SAME, "SAME " + s));
continue;
}
if (s.trim().length() == 0) {
lines.add(new LineItem(Type.ADDED, "ADDED " + s1));
continue;
}
if (s1.trim().length() == 0) {
lines.add(new LineItem(Type.REMOVED, "REMOVED " + s));
}
}
// for (LineItem line : lines) {
// System.out.println(line.line);
// }
}
public static enum Type {
ADDED, // New line added
REMOVED, // Line deleted
SAME // No change
}
public static class LineItem {
public Type type;
public String line;
public LineItem(Type type, String line) {
this.type = type;
this.line = line;
}
}
}