1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package libcore.java.io; 18 19 import java.io.ByteArrayOutputStream; 20 import java.io.OutputStream; 21 import java.io.PrintStream; 22 import java.util.Locale; 23 24 /** 25 * A PrintStream that throws away its output. 26 */ 27 public final class NullPrintStream extends PrintStream { 28 public NullPrintStream() { 29 // super class complains if argument is null 30 super((OutputStream) new ByteArrayOutputStream()); 31 } 32 public boolean checkError() { return false; } 33 protected void clearError() {} 34 public void close() {} 35 public void flush() {} 36 public PrintStream format(String format, Object... args) { return this; } 37 public PrintStream format(Locale l, String format, Object... args) { return this; } 38 public PrintStream printf(String format, Object... args) { return this; } 39 public PrintStream printf(Locale l, String format, Object... args) { return this; } 40 public void print(char[] charArray) {} 41 public void print(char ch) {} 42 public void print(double dnum) {} 43 public void print(float fnum) {} 44 public void print(int inum) {} 45 public void print(long lnum) {} 46 public void print(Object obj) {} 47 public void print(String str) {} 48 public void print(boolean bool) {} 49 public void println() {} 50 public void println(char[] charArray) {} 51 public void println(char ch) {} 52 public void println(double dnum) {} 53 public void println(float fnum) {} 54 public void println(int inum) {} 55 public void println(long lnum) {} 56 public void println(Object obj) {} 57 public void println(String str) {} 58 public void println(boolean bool) {} 59 protected void setError() {} 60 public void write(byte[] buffer, int offset, int length) {} 61 public void write(int oneByte) {} 62 public PrintStream append(char c) { return this; } 63 public PrintStream append(CharSequence csq) { return this; } 64 public PrintStream append(CharSequence csq, int start, int end) { return this; } 65 } 66
