Java CharArrayWriter close()方法及示例
Java中 CharArrayWriter 类的 close() 方法用于关闭当前流。
语法 :
public void close()
参数: 该方法不接受任何参数。
返回值: 该方法关闭了当前流。然而,它并不释放缓冲区。
以下程序说明了上述方法:
程序1:
// Java program to illustrate
// the close() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
// Initializing the character array
char[] geek
= { 'G', 'E', 'E', 'K', 'S' };
// Initializing the CharArrayWriter
CharArrayWriter char_array1
= new CharArrayWriter();
for (int c = 72; c < 77; c++) {
// Use of write(int char)
// Writer int value to the Writer
char_array1.write(c);
}
// Use of size() method
System.out.println("\nSize of char_array1 : "
+ char_array1.size());
// Close the current stream
char_array1.close();
}
}
输出
Size of char_array1 : 5
程序2:
// Java program to illustrate
// the close() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
// Initializing the character array
char[] geek
= { 'G', 'O', 'P', 'A', 'L', 'L' };
// Initializing the CharArrayWriter
CharArrayWriter char_array1
= new CharArrayWriter();
for (int c = 72; c < 78; c++) {
// Use of write(int char)
// Writer int value to the Writer
char_array1.write(c);
}
// Use of size() method
System.out.println("\nSize of char_array1 : "
+ char_array1.size());
// Close the current stream
char_array1.close();
}
}
输出
Size of char_array1 : 6
参考资料 : https://docs.oracle.com/javase/10/docs/api/java/io/CharArrayWriter.html#close()