Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package newsgroup; import org.apache.commons.io.FileUtils; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; /** * @author zwj */ public class ToJSON2D { public static void main(String[] args) throws IOException { String cat = "sci_talk"; // String BasePath = "C:\\20170125\\tsne_show\\echarts\\data\\comp_rec_tsne_our.csv"; String base = "C:\\20170125\\20newsgroup??\\20NG_matlabformat\\%s\\%s_tsne_%s.csv"; String[] methods = { "mtrick", "DTL", "TriTL", "our" }; for (String cString : methods) { go2json(String.format(base, cat, cat, cString)); } } public static void go2json(String path) throws IOException { List<String> readLines = FileUtils.readLines(new File(path)); List<String[]> cat1 = new ArrayList<>(); List<String[]> cat2 = new ArrayList<>(); for (String line : readLines) { String[] split = line.split(","); if (split[2].equals("1")) { cat1.add(split); } else if (split[2].equals("2")) { cat2.add(split); } else { break; } } StringBuilder sb = new StringBuilder(); sb.append("[["); for (String[] li : cat1) { sb.append("[").append(li[0]).append(",").append(li[1]).append("],"); } sb.deleteCharAt(sb.length() - 1); sb.append("],["); for (String[] li : cat2) { sb.append("[").append(li[0]).append(",").append(li[1]).append("],"); } sb.deleteCharAt(sb.length() - 1); sb.append("]];"); String name = ""; if (path.contains("mtrick")) { name = "mtrick"; } else if (path.contains("DTL")) { name = "DTL"; } else if (path.contains("TriTL")) { name = "TriTL"; } else if (path.contains("our")) { name = "our"; } sb.insert(0, "var " + name + "="); FileUtils.write(new File(path + ".js"), sb.toString()); } }