FilterReader.read(char[] cbuf, int off, int len)方法範例
FilterReader.read(char[] cbuf, int off, int len)
具有以下語法。
public int read(char[] cbuf, int off, int len) throws IOException
在下面的程式碼中展示了如何使用FilterReader.read(char[] cbuf, int off, int len)
方法。
import java.io.FilterReader;
import java.io.Reader;
import java.io.StringReader;
public class Main {
public static void main(String[] args) throws Exception {
char[] cbuf = new char[6];
int i = 0;// at W w W. y Ii b Ai .c O M
Reader r = new StringReader("ABCDEF");
FilterReader fr = new FilterReader(r) {
};
// read data of len 4, to the buffer
i = fr.read(cbuf, 2, 4);
System.out.println("No. of characters read: " + i);
// read till the end of the char buffer
for (char c : cbuf) {
// checks for the empty character in buffer
if ((byte) c == 0)
c = '-';
System.out.print(c);
}
}
}
上面的程式碼生成以下結果。
No. of characters read: 4
--ABCD