从txt文本中读取20行数据组成一个ArrayList，我已经生成了第一个Arraylist，但是如何往下取呢

[xiehanwei]

从txt文本中读取20行数据组成一个ArrayList，我已经生成了第一个Arraylist，但是如何往下取呢

public List getoneword() throws IOException {

List<String> keywords2 = new ArrayList<>();
Readline readline = new Readline();
String filename = "D:/洗发水.txt";
List keywords1 = new ArrayList<>();
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(filename)));
String line = null;

while ((line = br.readLine()) != null) {//行读文件
keywords1.add(line);
}

}

[tony4geek]

看不懂什么意思。

[姜小白-]

如何往下取，楼主讲详细点

[咖啡加蛋]

br.readLine()方法调用的时候指针会向下走的

[pingchangxinli]

fileinputstream 有方法skip，每次记录已读，下次跳过

[pingchangxinli]

不知道楼主是不是这个需要

package io;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class FileSkipTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		File file = new File("F:\\a.txt");
		BufferedReader reader = null;
		String line = null;
		int sign = 1;
		int a = 0;
		StringBuffer buffer = new StringBuffer();
		List<String> list = new ArrayList<String>();
		try {
			reader = new BufferedReader(new FileReader(file));
			while((line = reader.readLine()) != null){
				buffer.append(line);
				if(sign%5 != 0){
					
					
				}else{
					list.add(buffer.toString());
					buffer = new StringBuffer();
				}
				sign++;
			}
			if(sign%5 !=0){
				list.add(buffer.toString());
			}
			for(int i=0;i<list.size();i++){
				System.out.println(list.get(i));
			}		
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}