import java.io.*;
public class CompareDataInFiles {
// File names to Read & Write.
String actualFile
= "C:TestJavaSampleRead.txt"; String expectedFile
= "C:TestJavaSampleWrite1.txt"; String descptnFile
= "C:TestJavaSampleWrite2.txt"; try{
// Create FileReader & Writer Objects.
// Create Buffered Object.
// Get the file contents into String Variables.
String actlFileContent
= actlFileBufRdr.
readLine(); String expctdFileContent
= expcFileBufRdr.
readLine();
// Compare the Contents of the files.
String startOfComparision
= "---------START----------"; resultFileBufWrtr.write(startOfComparision);
resultFileBufWrtr.newLine();
System.
out.
println(startOfComparision
);
boolean isDifferent = false;
int lineNumber = 1;
if (actlFileContent != null || expctdFileContent != null) {
// Check whether Actual file contains data or not
while((actlFileContent!=null) ){
// Check whether Expected file contains data or not
if (((expctdFileContent )!=null)) {
// Check whether both the files have same data in the lines
if (!actlFileContent.equals(expctdFileContent)) {
resultFileBufWrtr.write("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains : "+expctdFileContent);
resultFileBufWrtr.newLine();
System.
out.
println("Difference in Line "+lineNumber
+" :- Actual File contains :"+actlFileContent
+", Expected File Contains : "+expctdFileContent
); isDifferent = true;
}
lineNumber = lineNumber+1;
expctdFileContent= expcFileBufRdr.readLine();
}
else{
resultFileBufWrtr.write("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);
resultFileBufWrtr.newLine();
System.
out.
println("Difference in Line "+lineNumber
+" :- Actual File contains :"+actlFileContent
+", Expected File Contains - "+expctdFileContent
); isDifferent = true;
lineNumber = lineNumber+1;
}
actlFileContent=actlFileBufRdr.readLine();
}
// Check for the condition : if Actual File has Data & Expected File doesn't contain data.
while ((expctdFileContent!=null)&&(actlFileContent==null)) {
resultFileBufWrtr.write("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);
resultFileBufWrtr.newLine();
System.
out.
println("Difference in Line "+lineNumber
+" :- Actual File contains :"+actlFileContent
+", Expected File Contains - "+expctdFileContent
); isDifferent = true;
lineNumber = lineNumber+1;
expctdFileContent= expcFileBufRdr.readLine();
}
}
else{
// Mention that both the files don't have Data.
resultFileBufWrtr.write("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);
resultFileBufWrtr.newLine();
System.
out.
println("Difference in Line "+lineNumber
+" :- Actual File contains :"+actlFileContent
+", Expected File Contains - "+expctdFileContent
); isDifferent = true;
}
// Check is there any difference or not.
String endOfComparision
= "-----------END----------"; if (isDifferent) {
resultFileBufWrtr.append(endOfComparision);
System.
out.
println(endOfComparision
); }
else{
resultFileBufWrtr.append("No difference Found");
resultFileBufWrtr.newLine();
resultFileBufWrtr.append(endOfComparision);
System.
out.
println("No difference Found"); System.
out.
println(endOfComparision
); }
//Close the streams.
actualFileReader.close();
expctdFileReader.close();
resultFileBufWrtr.close();
actlFileBufRdr.close();
expcFileBufRdr.close();
}
{
e.printStackTrace();
}
}
}
Java