因此，事实证明这是一个解决方案，我对昨天有个想法，但从未采取任何行动。
从本质上讲，我遇到的问题的根源（我认为）是由于写缓冲区溢出导致的，导致未定义的行为。
现在，我不知道这是由于Java bufferedwriter的错误Java实现还是由于到底发生了什么，但是解决方案却变得相对简单：现在
每进行一次迭代就
刷新流，我知道您知道什么在想，加！经常这样！减速一定是巨大的！是的，确实如此，增速放缓是巨大的，它使解析文件的时间从大约14秒缩短到大约4分钟达到了1700万行。
可能我可以稍微提高刷新次数以提高性能，但是每10次刷新一次仍然失败。
我敢肯定，这是Java中如何处理读/写操作和内存管理的内部结果，而且我没有时间去研究它。如果有人想花时间对这种行为做出很好的解释，我会很乐意将我接受的答案切换到他们的帖子，因为它更加完整。
固定类（现在可以使用）的代码以
DateWriter供将来检查：
package File_Conversion;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.IOException;import java.text.DecimalFormat;import java.util.ArrayList;import javafx.application.Platform;import javafx.scene.control.ProgressIndicator;public class DateWriter implements Runnable { private final ProgressIndicator myIndicator; private static File ncFile; private final String outputLocationFile; private float zmax, zmin, xmax, xmin, ymax, ymin; private ArrayList<Float> xList, yList, zList; private final DecimalFormat numberFormat = new DecimalFormat("#.000000"); private final DecimalFormat numberFormatMinMax = new DecimalFormat("#.00000"); private final boolean yr_mon_day; public DateWriter(String inputNCFile, String outputLocation, ProgressIndicator myIndicator, boolean yr_mon_day) { this.yr_mon_day = yr_mon_day; this.myIndicator = myIndicator; ncFile = new File(inputNCFile); outputLocationFile = outputLocation; } @Override public void run() { convertDate(); Platform.runLater(new Runnable() { @Override public void run() { File_Conversion.stage_returner().close(); } }); System.out.println("At the end of the method."); } public boolean convertDate() { BufferedReader br = null; java.io.FileWriter yearWriter = null, monthWriter = null, dayWriter = null, fWriter = null; BufferedWriter yearBuf = null, monthBuf = null, dayBuf = null, writer = null; try { br = new BufferedReader(new FileReader(ncFile)); if (yr_mon_day) { yearWriter = new java.io.FileWriter(outputLocationFile + "\" + ncFile.getName().substring(0, ncFile.getName().lastIndexOf(".")) + "_modified_year.csv", false); yearBuf = new BufferedWriter(yearWriter); monthWriter = new java.io.FileWriter(outputLocationFile + "\" + ncFile.getName().substring(0, ncFile.getName().lastIndexOf(".")) + "_modified_month.csv", false); monthBuf = new BufferedWriter(monthWriter); dayWriter = new java.io.FileWriter(outputLocationFile + "\" + ncFile.getName().substring(0, ncFile.getName().lastIndexOf(".")) + "_modified_day.csv", false); dayBuf = new BufferedWriter(dayWriter); String input; String temp; String temp2; String temp3; while ((input = br.readLine()) != null) { temp = input.substring(0, 4); temp2 = input.substring(4, 6); temp3 = input.substring(6); Platform.runLater(new Runnable() { @Override public void run() { myIndicator.setProgress(-1); } }); yearBuf.write(temp + "n"); monthBuf.write(temp2 + "n"); dayBuf.write(temp3 + "n"); yearBuf.flush(); monthBuf.flush(); dayBuf.flush(); temp = null; temp2 = null; temp3 = null; } } else { fWriter = new java.io.FileWriter(outputLocationFile + "\" + ncFile.getName() + "_modified.csv", false); writer = new BufferedWriter(fWriter); String input; String temp; while ((input = br.readLine()) != null) { temp = input.substring(0, 4) + "," + input.substring(4, 6) + "," + input.substring(6); Platform.runLater(new Runnable() { @Override public void run() { myIndicator.setProgress(-1); } }); writer.write(temp + "n"); writer.flush(); } } } catch (IOException e) { e.printStackTrace(System.out); } finally { try { if (br != null) { br.close(); } if (yearBuf != null) { yearBuf.close(); } if (monthBuf != null) { monthBuf.close(); } if (dayBuf != null) { dayBuf.close(); } if (yearWriter != null) { yearWriter.close(); } if (monthWriter != null) { monthWriter.close(); } if (dayWriter != null) { dayWriter.close(); } if (fWriter != null) { fWriter.close(); } if (writer != null) { writer.close(); } } catch (IOException e) { e.printStackTrace(System.out); } } return true; }}
