Java BufferedReader.read(char[] cbuf, int off, int len)方法範例

2019-10-16 22:17:53

Java BufferedReader.read(char[] cbuf, int off, int len)方法範例

BufferedReader中的BufferedReader.read(char[] cbuf, int off, int len)方法具體的語法如下。

public int read(char[] cbuf, int off, int len)  throws IOException

範例

在下面的程式碼中展示了如何使用BufferedReader.read(char[] cbuf, int off, int len)方法。

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
// ? www.tw511.com 2016-12-24 17:37:01 星期六 
public class Main {
  public static void main(String[] args) throws Exception {
    InputStream is = new FileInputStream("c:/test.txt");

    InputStreamReader isr = new InputStreamReader(is);

    BufferedReader br = new BufferedReader(isr);

    char[] cbuf = new char[is.available()];

    br.read(cbuf, 2, 10);

    for (char c : cbuf) {
      if (c == (char) 0) {
        c = '*';
      }
      // prints characters
      System.out.print(c);
    }
  }
}