java 取出文本文件中空行的实例代码

复制代码 代码如下:
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();
        }
    }
}