学步园

  import java.io.File;<br /> import java.io.FileOutputStream;<br /> import java.io.IOException;<br /> import java.io.OutputStream;<br /> import java.io.OutputStreamWriter;<br /> import java.io.PrintWriter;<br /> import java.io.Writer;<br /> public class WriteToFile {<br /> public static void writeFileByBytes(String fileName) {<br /> File file = new File(fileName);<br /> OutputStream out = null;<br /> try {<br /> // 打开文件输出流<br /> out = new FileOutputStream(file);<br /> String content = "文件内容： 1,The First line; 2,The second line.";<br /> byte[] bytes = content.getBytes(); // 读取输出流中的字节<br /> out.write(bytes);<br /> System.out.println("写文件" + file.getAbsolutePath() + "成功！");<br /> } catch (IOException e) {<br /> System.out.println("写文件" + file.getAbsolutePath() + "失败！");<br /> e.printStackTrace();<br /> } finally {<br /> if (out != null) {<br /> try {<br /> out.close();<br /> } catch (IOException e1) {<br /> e1.printStackTrace();<br /> }<br /> }<br /> }<br /> }<br /> public static void writeFileByChars(String fileName) {<br /> File file = new File(fileName);<br /> Writer writer = null;<br /> try {<br /> // 打开文件输出流<br /> writer = new OutputStreamWriter(new FileOutputStream(file));<br /> String counter = "文件内容 1,The First line; 2,The second line.";<br /> writer.write(counter);<br /> System.out.println("写文件 " + file.getAbsolutePath() + "成功！");<br /> } catch (IOException e) {<br /> System.out.println("写文件 " + file.getAbsolutePath() + "失败！");<br /> e.printStackTrace();<br /> } finally {<br /> if (writer != null) {<br /> try {<br /> writer.close();<br /> } catch (IOException e1) {<br /> e1.printStackTrace();<br /> }<br /> }<br /> }<br /> }<br /> public static void writeFileByLines(String fileName) {<br /> File file = new File(fileName);<br /> PrintWriter writer = null;<br /> try {<br /> writer = new PrintWriter(new FileOutputStream(file));<br /> writer.println("文件内容："); // 写字符串<br /> // 写入各种基本类型数据<br /> writer.print(true);<br /> writer.print(155);<br /> writer.println(); // 换行<br /> writer.flush(); // 写入文件<br /> System.out.println("写文件 " + file.getAbsolutePath() + "成功！");<br /> } catch (IOException e) {<br /> System.out.println("写文件 " + file.getAbsolutePath() + "失败！");<br /> e.printStackTrace();<br /> } finally {<br /> if (writer != null) {<br /> writer.close(); // 关闭输出文件流<br /> }<br /> }<br /> }<br /> public static void main(String[] args) {<br /> String fileName = "d://Test//newTemp.txt";<br /> WriteToFile.writeFileByBytes(fileName);<br /> fileName = "d://Test//newTemp1.txt";<br /> WriteToFile.writeFileByChars(fileName);<br /> fileName = "d://Test//newTemp2.txt";<br /> WriteToFile.writeFileByLines(fileName);<br /> }<br /> }<br />

其实这么重要的东西，应该死记在心里的。不过记的东西太多了。还是放在BLOGGER上好了。呵呵。。BLOGGER，小仓库。。^^