调用接口方法比类方法慢。
相关指令：
invokeinterface | b9 | 4: indexbyte1, indexbyte2, count, 0 | objectref, [arg1, arg2, ...] → | invokes an interface method on object objectref, where the interface method is identified by method reference index in constant pool (indexbyte1 << 8 + indexbyte2) |
invokespecial | b7 | 2: indexbyte1, indexbyte2 | objectref, [arg1, arg2, ...] → | invoke instance method on object objectref, where the method is identified by method reference index in constant pool (indexbyte1 << 8 + indexbyte2) |
invokestatic | b8 | 2: indexbyte1, indexbyte2 | [arg1, arg2, ...] → | invoke a static method, where the method is identified by method reference index in constant pool (indexbyte1 << 8 + indexbyte2) |
invokevirtual | b6 | 2: indexbyte1, indexbyte2 | objectref, [arg1, arg2, ...] → | invoke virtual method on object objectref, where the method is identified by method reference index in constant pool (indexbyte1 << 8 + indexbyte2) |
