java实现文本文件删除空行的示例分享

java删除文本文件空行

import java.io.bufferedinputstream;
import java.io.bufferedreader;
import java.io.file;
import java.io.fileinputstream;
import java.io.filewriter;
import java.io.ioexception;
import java.io.inputstream;
import java.io.inputstreamreader;

public class qukonghang {
 private static string filename1;
 private static string filename2;
 public static void main(string[] args) {
  filename1="file1";
  filename2="file2";
  file file=new file(filename1);
  inputstream is=null;
  bufferedreader br = null;
  string tmp;
  filewriter writer=null;
  int i=0;
  try {
   is=new bufferedinputstream(new fileinputstream(file));
   br = new bufferedreader(new inputstreamreader(is, "utf-8"));
   writer = new filewriter(filename2, true);
   while((tmp=br.readline())!=null){
    if(tmp.equals(""));
    else{
     writer.write(tmp+"\n");
     i++;
     system.out.println(i);
    }
   }
   writer.close();
   is.close();
  } catch (ioexception e) {
   e.printstacktrace();
  }
 }
}