Java|java教程
java io
Java-java教程
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import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileWriter;import java.io.IOException;import java.io.PrintStream;import java.io.PrintWriter;import java.io.RandomAccessFile;public class WriteStringToTxt { public void WriteStringToFile(String filePath) { try { File file = new File(filePath); PrintStream ps = new PrintStream(new FileOutputStream(file)); ps.println("");// 往文件里写入字符串 ps.append("");// 在已有的基础上添加字符串 } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void WriteStringToFile2(String filePath) { try { FileWriter fw = new FileWriter(filePath, true); BufferedWriter bw = new BufferedWriter(fw); bw.append("在已有的基础上添加字符串"); bw.write("abc\r\n ");// 往已有的文件上添加字符串 bw.write("def\r\n "); bw.write("hijk "); bw.close(); fw.close(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void WriteStringToFile3(String filePath) { try { PrintWriter pw = new PrintWriter(new FileWriter(filePath)); pw.println("abc "); pw.println("def "); pw.println("hef "); pw.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void WriteStringToFile4(String filePath) { try { RandomAccessFile rf = new RandomAccessFile(filePath, "rw"); rf.writeBytes("op\r\n"); rf.writeBytes("app\r\n"); rf.writeBytes("hijklllll"); rf.close(); } catch (IOException e) { e.printStackTrace(); } } public void WriteStringToFile5(String filePath) { try { FileOutputStream fos = new FileOutputStream(filePath); String s = "l"; fos.write(s.getBytes()); fos.close(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String[] args) { String filePath = "E:\\link.txt"; // new WriteStringToTxt().WriteStringToFile(filePath); // new WriteStringToTxt().WriteStringToFile2(filePath); // new WriteStringToTxt().WriteStringToFile3(filePath); // new WriteStringToTxt().WriteStringToFile4(filePath); new WriteStringToTxt().WriteStringToFile5(filePath); }}
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