如果已到達壓縮數據輸出流的末尾,則java.util.zip中Deflater類的finished()函數將返回true。
函數簽名:
public boolean finished()
用法:
d.finished();
參數:該函數不需要參數
返回類型:該函數返回布爾值,即如果所有輸入都已壓縮並存儲在給定的緩衝區中,則為true,否則為false。
異常:該函數不會引發任何異常
範例1:演示使用finished()函數
// 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();
}
}
輸出:
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
參考: https://docs.oracle.com/javase/7/docs/api/java/util/zip/Deflater.html#finished()
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注:本文由純淨天空篩選整理自andrew1234大神的英文原創作品 Deflater finished() function in Java with examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。