関連ワード:  java non static method cannot be referenced from static context    java lambda non-static method cannot be referenced from a static context    java error non static method cannot be referenced from a static context    java non static method nextint () cannot be referenced from a static context    java non static method nextline () cannot be referenced from a static context    java stream non static method cannot be referenced from a static context    java non static method getclass () cannot be referenced from a static context    java non static method findall () cannot be referenced from a static context    java non static method tostring () cannot be referenced from a static context    java flatmap non static method cannot be referenced from a static context  
結果 : java non static method cannot be referenced from static context