java读写CSV文件

客官°小女子只卖身不卖艺 2024-04-20 10:44 122阅读 0赞

# java读写CSV文件 #

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> 参考文献  
> [读取csv文件中数据][csv]  
> [将数据保存为csv文件格式][csv 1]

# 读取CSV文件中的数据 #

import java.io.*; import java.util.ArrayList; import java.util.StringTokenizer; public class readCSV { void readCSV(String readpath, ArrayList Nolist, ArrayList Dnalist) { File inFile = new File(readpath); try { BufferedReader reader = new BufferedReader(new FileReader(inFile)); while (reader.ready()) { String line = reader.readLine(); StringTokenizer st = new StringTokenizer(line, ","); int NO; String DNAsequence; if (st.hasMoreTokens()) { NO = Integer.valueOf(st.nextToken().trim()); DNAsequence = String.valueOf(st.nextToken().trim()); Nolist.add(NO); Dnalist.add(DNAsequence); } } reader.close(); } catch (Exception e) { e.printStackTrace(); } } }

# 将数据保存为csv格式 #

package Readcsv_testV0; import java.io.*; import java.util.ArrayList; public class OutputCSV { public static void writeCSV(ArrayList<String []> DNA, ArrayList<Double> Con, ArrayList<Double> Hp, ArrayList<Double> Hm, ArrayList<Double> Si, ArrayList<Double> Tm, ArrayList<Double> GC, String path) { try { BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path), "UTF-8")); for (int i = 0; i < DNA.size(); i++) { out.write(DNA.get(i)[0]); out.write(","); out.write(DNA.get(i)[1]); out.write(","); out.write(Con.get(i).toString()); out.write(","); out.write(Hp.get(i).toString()); out.write(","); out.write(Hm.get(i).toString()); out.write(","); out.write(Si.get(i).toString()); out.write(","); out.write(Tm.get(i).toString()); out.write(","); out.write(GC.get(i).toString()); out.newLine(); } out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } } }

转载于:https://www.cnblogs.com/cloud-ken/p/11093594.html

[Follow Me]: https://github.com/Asurada2015
[csv]: http://blog.sina.com.cn/s/blog_d716e1830102x9ks.html
[csv 1]: https://blog.csdn.net/luanpeng825485697/article/details/78162459