java生成txt文件,讀txt文件

1.方法1

public static void main(String[] args) {
        try {
            FileWriter fileWriter = new FileWriter("c:\\Result.txt");
            String ss = "cName\t\cCode\t\tcreateDate\n";
            ss += "dbc券\t\t111188\t\t2017-05-14\n";
            ss += "zc券\t\t111199\t\t2017-05-14\n";
            fileWriter.write(ss);
            fileWriter.flush();
            fileWriter.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(">>>>>>>>>>>>>>>>>>write end");

        try {
            FileReader fileReader = new FileReader("c:\\Result.txt");
            BufferedReader br = new BufferedReader(fileReader);
            String s;
            while ((s = br.readLine()) != null) {
                System.out.println(s);
            }
            fileReader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

　　　　System.out.println(">>>>>>>>>>>>>>>>>>read end");

}

 

2.方法2

public static void main(String[] args) {
        File f = new File("c:\\temp.txt");
        OutputStream out = null;
        try{
            out = new FileOutputStream(f);
        }catch (FileNotFoundException e){
            e.printStackTrace();
        }
        
        String ss = "cName\t\tcCode\t\tcreateDate\n";
        ss += "dbc券\t\t111188\t\t2017-05-14\n";
        ss += "zc券\t\t111199\t\t2017-05-14\n";
        // 將字符串轉成字節數組
        byte b[] = ss.getBytes();
        try
        {
            // 將byte數組寫入到文件之中
            out.write(b);
            out.close();
        }catch (IOException e1){
            e1.printStackTrace();
        }
        
        
        System.out.println("write end>>>>>>>>>>>");
        // 如下爲讀文件操做
        InputStream in = null;
        try{
            in = new FileInputStream(f);
        }catch (FileNotFoundException e3){
            e3.printStackTrace();
        }

        // 開闢一個空間用於接收文件讀進來的數據
        byte b1[] = new byte[1024];
        int i = 0;
        try{
            // 將b1的引用傳遞到read()方法之中，同時此方法返回讀入數據的個數
            i = in.read(b1);
            in.close();
        }catch (IOException e4){
            e4.printStackTrace();
        }

        // 將byte數組轉換爲字符串輸出
        System.out.println(new String(b1, 0, i));
        System.out.println("read end>>>>>>>>>>>");

    }