修正：pc处理逻辑；新增：跳转指令(if_cmple, goto)+iload_n指令 #9
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2.opcode/OpcodeRout.java - 增加 lload_0 ~ lload_3 的实现 - AALOAD 的处理，加上安全判断处理(否则，运行sample2会在这报错) 3.Slots* 增加提示
2.opcode/OpcodeRout.java：增加 arraylength 实现
2.opcode/OpcodeRout.java：增加跳转opcode实现-if_cmple、goto，但还有问题 3.增加samples代码
2.更新ReadMe.md
caoym
reviewed
Jun 19, 2019
README.md
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| 这是一个Java实现的JAVA虚拟机，它会非常简单，实际上简单的只够运行HelloWorld。虽然简单，但尽量符合 JVM 标准，目前主要参考依据是[《Java虚拟机规范 （Java SE 7 中文版）》](http://www.iteye.com/topic/1117824)。 | |||
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| 关于此项目的说明，[详见此文](http://www.jianshu.com/p/4d81465c2fb8)。 | |||
| 非原创，原项目来自 https://github.com/caoym/jjvm ， | |||
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此处说明可以删除，否则合入后会比较奇怪
另外后面的参考资料，建议不要放到readme内，因为本项目创建过程中并没有参考这两个项目。建议在修改pc实现处可以注明参考资料。
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#修正pc处理逻辑
不兼容原处理模式
#新增指令
##跳转指令
if_cmple, goto
##加载指令
iload_n
#sample代码(1~3)