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https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jce_policy-6-oth-JPR@CDS-CDS_Developer
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<java-home>/lib/security [Unix]
<java-home>\lib\security [Win32]
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KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(192); // 192 and 256 bits also available£¬ÕâÒ»²½ÊÇ·ñÓа²×°jce unlimited strength jurisdiction policy files ¶¼²»»á³öÏÖÒì³£
Generate the secret key specs.
SecretKey skey = kgen.generateKey();
byte[] raw = skey.getEncoded();
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1.SnakeModel.java
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import java.util.LinkedList;
import java.util.Arrays;
import java.util.Random;
import javax.swing.*;
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