如果已到达压缩数据输出流的末尾，则java.util.zip中Deflater类的finished()函数将返回true。
函数签名：
public boolean finished()
用法:
d.finished();
参数：该函数不需要参数
返回类型：该函数返回布尔值，即如果所有输入都已压缩并存储在给定的缓冲区中，则为true，否则为false。
异常：该函数不会引发任何异常
范例1：演示使用finished()函数
// Java program to demonstrate
// the use of finished() function
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
public static void main(String args[])
throws UnsupportedEncodingException
{
// deflater
Deflater d = new Deflater();
// get the text
String pattern = "GeeksforGeeks", text = "";
// generate the text
for (int i = 0; i < 4; i++)
text += pattern;
// set the input for deflator
d.setInput(text.getBytes("UTF-8"));
// finish
d.finish();
// output of finished function
System.out.println("end of compressed data "
+ "output stream reached:"
+ d.finished());
// output bytes
byte output[] = new byte[1024];
// compress the data
int size = d.deflate(output);
// compressed String
System.out.println("Compressed String:"
+ new String(output)
+ "\n Size " + size);
// original String
System.out.println("Original String:" + text
+ "\n Size " + text.length());
// output of finished function
System.out.println("end of compressed data "
+ "output stream reached:"
+ d.finished());
// end
d.end();
}
}
输出：
end of compressed data output stream reached:false
Compressed String:x?sOM?.N?/r???q??
Size 21
Original String:GeeksforGeeksGeeksforGeeksGeeksforGeeksGeeksforGeeks
Size 52
end of compressed data output stream reached:true
