1.背景
版本号不对,会报错,如下
2.版本对应情况
JDK 1.8 = 52
JDK 1.7 = 51
JDK 1.6 =50
JDK 1.5 = 49
JDK 1.4 = 48
JDK 1.3 = 47
JDK 1.2 = 46
JDK 1.1 = 45
版本号不对,会报错,如下
JDK 1.8 = 52
JDK 1.7 = 51
JDK 1.6 =50
JDK 1.5 = 49
JDK 1.4 = 48
JDK 1.3 = 47
JDK 1.2 = 46
JDK 1.1 = 45