錯誤出現在第26行，也就是EncodeHintType第一次被調用的那一行，并且E這個類已經在Createqr.java里被import了

package com.ldh.zxing;

import java.io.File;
import java.nio.file.Path;
import java.util.HashMap;

import com.google.zxing.EncodeHintType;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;

//生成二維碼
public class CreateQRCode {

?public static void main(String[] args) {
??
??int width = 300;
??int height = 300;
??String format = "png";
??String content = "Hello, i am liu";
??
??//定義二維碼參數
??HashMap hints = new HashMap();
??hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
??hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
??hints.put(EncodeHintType.MARGIN, 2);
??
??//生成二維碼
??try {
???BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
???
???Path file = new File("E:/JAVA/zxing/img.png").toPath();
???MatrixToImageWriter.writeToPath(bitMatrix, format, file);
??} catch (Exception e) {
???e.printStackTrace();
??}
?}

}