File file = new File("d:/websrc/test.xml");
BufferedReader reader = new BufferedReader (new FileReader(file));
int size = 0;
while(reader.readLine()!=null){
size ++;
}
System.out.println("共"+size+"行");
BufferedReader reader = new BufferedReader (new FileReader(file));
int size = 0;
while(reader.readLine()!=null){
size ++;
}
System.out.println("共"+size+"行");
import java.util.*; StringTokenizer sLine;//StringTokenizer,行
sLine = new StringTokenizer(文件内容,"\n");//由换行符分隔
int countLine = sLine.countTokens();//获得行数
sLine.nextToken();//以行为单位取数据
常用的类就可以实现,try {
String str=null;
int line=0;
BufferedReader in=new BufferedReader(new FileReader(new File("www.txt")));
while ((str=in.readLine()) != null) {
line++;
}
}catch (IOException e) {}
怎么使size++时当前行也前移?
import java.io.*;
public class Test1
{
public static void Head1(InputStream from_name) throws IOException{
LineNumberReader lineReader = new LineNumberReader(
new InputStreamReader(from_name));
String currentLine;
int charCount = 0; while ((currentLine = lineReader.readLine()) != null) {
charCount++;
}
System.out.println(charCount);
}
public static void main(String[] args)
{
if (args.length != 1) // Check arguments
System.err.println("Usage: java FileCopy <source> ");
else {
// Call copy() to do the copy; display any error messages
try { Head1(System.in); }
catch (IOException e) { System.err.println(e.getMessage()); }
}
}
}应该还是在while()中死掉了 吧
System.out.println("the line number is : " + strsub.length-1);
其中str是文件的内容。(全部)