J2SE 8 = 52,
J2SE 7(jdk1.7) = 51,
J2SE 6.0(jdk1.6)= 50,
J2SE 5.0(jdk1.5)= 49,
JDK 1.4 = 48,
JDK 1.3 = 47,
JDK 1.2 = 46,
JDK 1.1 = 45
那怎么办?
好办,把项目工程的jdk版本改一下不就行了。
下面是步骤: