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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;
public class FileManager {
public static String read(String fileName?? String encoding) {
StringBuffer fileContent = new StringBuffer();
try {
FileInputStream fis = new FileInputStream(fileName);
InputStreamReader isr = new InputStreamReader(fis?? encoding);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ((line = br.readLine()) != null) {
fileContent.append(line);
fileContent.append(System.getProperty("line.separator"));
}
br.close();
isr.close();
fis.close();
} catch (Exception e) {
e.printStackTrace();
}
return fileContent.toString();
}
public static void write(String fileContent?? String fileName?? String encoding) {
try {
FileOutputStream fos = new FileOutputStream(fileName);
OutputStreamWriter osw = new OutputStreamWriter(fos?? encoding);
osw.write(fileContent);
osw.flush();
osw.close();
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
?????????????
????д?? FileManager.write("Hello?? World!"?? "D:\test.txt"?? "UTF-8");
??????? System.out.println(FileManager.read("D:\test.txt"?? "UTF-8"));