黑马程序员-JAVA高级视频_IO输入与输出-18天-6(文本文件读取方式二)

package itcast.java16;

import java.io.FileReader;
import java.io.IOException;

/*
* (字符数组读取方式二)
*/
public class FileReaderDemo2 {
public static void main(String[] args) {
FileReader fr = null;
try {
fr = new FileReader("demo.txt");
char[] chars = new char[1024];
int i = 0;
while ((i = fr.read(chars)) != -1) {
System.out.println(String.valueOf(chars, 0, i));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fr != null)
try {
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}