![java.lang.NoClassDefFoundError: javafx/application/Application in Eclipse IDE (Beginning Java forum at Coderanch) java.lang.NoClassDefFoundError: javafx/application/Application in Eclipse IDE (Beginning Java forum at Coderanch)](http://math.hws.edu/javanotes/c2/eclipse-fx.png)
java.lang.NoClassDefFoundError: javafx/application/Application in Eclipse IDE (Beginning Java forum at Coderanch)
barchart-javafx-study/barchart-oracle-javafx-2.2.7/src/main/java/javafx/util /Pair.java at master · barchart/barchart-javafx-study · GitHub
![Kevin Le on X: "just solved java hashset on @HackerRank. takeaway: - javafx. util.Pair is the equivalent to a tuple - adding a duplicate to hashset doesn't do anything, also it doesn't throw Kevin Le on X: "just solved java hashset on @HackerRank. takeaway: - javafx. util.Pair is the equivalent to a tuple - adding a duplicate to hashset doesn't do anything, also it doesn't throw](https://pbs.twimg.com/media/F3m538RacAAJ5We.jpg)