Idea 编译报错 javacTask: 源发行版 1.6 需要目标发行版 1.6

Information:Using javac 1.7.0_75 to compile java sources Information:java: javacTask: 源发行版 1.6 需要目标发行版 1.6 Information:java: Errors occurred while compiling module 'kulong' Information:15/3/26 13:22 - Compilation completed with 1 error and 0 warnings in 5s 771ms Error:java: Compilation failed: internal java compiler error