java.util.zip.Deflater.end()
方法關閉壓縮機並丟棄任何未處理的輸入。 這個方法應該在壓縮機不再使用時呼叫,但也會通過finalize()
方法自動呼叫。 當這個方法被呼叫,Deflater
物件的行為是不確定的。
宣告
以下是java.util.zip.Deflater.end()
方法的宣告。
public void end()
引數
返回值
範例
以下範例顯示了java.util.zip.Deflater.end()
方法的用法。
import java.io.UnsupportedEncodingException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
public class DeflaterDemo {
public static void main(String[] args)
throws DataFormatException, UnsupportedEncodingException {
String message = "Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;"
+"Welcome to Tw511.com;";
System.out.println("Original Message length : " + message.length());
byte[] input = message.getBytes("UTF-8");
// Compress the bytes
byte[] output = new byte[1024];
Deflater deflater = new Deflater();
deflater.setInput(input);
deflater.finish();
int compressedDataLength = deflater.deflate(output);
deflater.end();
System.out.println("Compressed Message length : " + compressedDataLength);
// Decompress the bytes
Inflater inflater = new Inflater();
inflater.setInput(output, 0, compressedDataLength);
byte[] result = new byte[1024];
int resultLength = inflater.inflate(result);
inflater.end();
// Decode the bytes into a String
message = new String(result, 0, resultLength, "UTF-8");
System.out.println("UnCompressed Message length : " + message.length());
}
}
執行上面範例程式碼,得到以下結果 -
Original Message length : 300
Compressed Message length : 42
UnCompressed Message length : 300