Java tutorial
//package com.java2s; /* * Copyright 2016. SHENQINCI(?)<946736079@qq.com> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.support.annotation.NonNull; import java.io.Closeable; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; public class Main { private static int length; public static boolean addByte(@NonNull File fileName, @NonNull String content) { if (!fileName.isFile()) { return false; } OutputStream out = null; try { out = new FileOutputStream(fileName, true); byte[] b = content.getBytes(); for (int i = 0; i < b.length; i++) { out.write(b[i]); } return true; } catch (IOException e) { e.printStackTrace(); return false; } catch (Exception e) { return false; } finally { CloseableClose(out); } } public static void CloseableClose(Closeable closeable) { if (closeable != null) { try { closeable.close(); } catch (IOException e) { } } } }