Java tutorial
//package com.java2s; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; public class Main { public static void cacheStringToFile(String str, String filename) { File f = new File(filename); if (f.exists()) { f.delete(); } try { f.createNewFile(); } catch (IOException e) { e.printStackTrace(); } try { FileOutputStream fos = new FileOutputStream(f, true); fos.write(str.getBytes()); fos.close(); } catch (IOException e) { e.printStackTrace(); } } }