Java中处理图片时，MyEclipse需要导入以下包：
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
但编译器报错，错误信息：
Access restriction: The type JPEGCodec is not accessible due to restriction on required library/home/dsp/Applications/MyEclipse/binary/com.sun.java.jdk7.linux.x86_64_1.7.0.u45/jre/lib/rt.jar
Access restriction: The type JPEGEncodeParam is not accessible due to restriction on required library /home/dsp/Applications/MyEclipse/binary/com.sun.java.jdk7.linux.x86_64_1.7.0.u45/jre/lib/rt.jar
Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required library /home/dsp/Applications/MyEclipse/binary/com.sun.java.jdk7.linux.x86_64_1.7.0.u45/jre/lib/rt.jar
解决办法：
MyEclipse默认把这些受访问限制的API编译级别设置为：ERROR，只需把：Window -> Preferences -> Java -> Complicer -> Errors/Warnings
选项 Deprecated and restricted API 中的 Forbidden references(access rules) 由 Error 设置为 Warning 即可编译通过！
^_^