Java OutputStreamWriter write()方法
java.io.OutputStreamWriter.write(String str, int off, int len) 方法写入字符串的一部分。
1 语法
public void write(String str, int off, int len)
2 参数
str:一个字符串。
off:开始写入字符的偏移量。
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.OutputStreamWriter.write(String str, int off, int len) 方法的例子
*/
import java.io.*;
public class Demo {
public static void main(String[] args) {
String s = "Hello world!";
try {
// create a new OutputStreamWriter
OutputStream os = new FileOutputStream("test.txt");
OutputStreamWriter writer = new OutputStreamWriter(os);
// create a new FileInputStream to read what we write
FileInputStream in = new FileInputStream("test.txt");
// write something in the file
writer.write(s, 0, 5);
// flush the stream
writer.flush();
// read what we write
for (int i = 0; i < 5; i++) {
System.out.print("" + (char) in.read());
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
输出结果为:
Hello
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