Java FilterWriter write()方法
java.io.FilterWriter.write(char[] cbuf, int off, int len) 方法写入len个字符部分到文件写入器, 从偏移量off的位置读取字符数组。
1 语法
public void write(char[] cbuf, int off, int len)
2 参数
cbuf :源字符缓冲区写入此过滤器写入器。
off:开始读取字符的偏移量。
len:要写入的字符数。
3 返回值
无
4 示例
package com.yiidian;
/**
* 一点教程网: http://www.yiidian.com
*/
/**
* java.io.FilterWriter.write(char[] cbuf, int off, int len)方法的例子
*/
import java.io.FilterWriter;
import java.io.StringWriter;
import java.io.Writer;
public class Demo {
public static void main(String[] args) throws Exception {
FilterWriter fw = null;
Writer w = null;
char[] cbuf = {'A','B','C','D','E','F'};
String s = null;
try {
// create new reader
w = new StringWriter(6);
// filter writer
fw = new FilterWriter(w) {
};
// write to filter writer from character buffer
fw.write(cbuf, 2, 4);
// get the string
s = w.toString();
// print
System.out.print("String: "+s);
} catch(Exception e) {
// if any I/O error occurs
e.printStackTrace();
} finally {
// releases system resources associated with this stream
if(w!=null)
w.close();
if(fw!=null)
fw.close();
}
}
}
输出结果为:
String: CDEF
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