Differences between Java and kotlin access modifiers modifiers Java Kotlin public all kind of visible all kind of visible (the default) private current class visible current class visible prote Cted the current class, subclass, class is visible under the same package path the current class, subclass visible default class visible (the default) under the same package path no internal no class is visible in the same module Read More: Access characteristics of construction methods in Java inheritance Java gets the type t.class of generic t Error: Could not find or load main class *** Some problems encountered by Android Aidl Could not find or load main class import org.junit.Test And @ test error reporting — solutions How to Fix stack overflow error Initialization order of Java objects non-static variable this cannot be referenced from a static context The method of Java jumping out of loop Struts 2 encapsulates form data into list and map sets Abstract precautions Realization of springboot authorization verification technology based on JWT java.lang.UnsupportedOperationException resolvent Implement Set using Array. Macro generated_ UCLASS_ Body () and generated_ Analysis of body () Quick solution org.gradle.api . tasks.TaskExecutionException : Execution failed for task ‘: app:compileJava ‘ class.getResource () and ClassLoader.getResource How to fill in the parameters in () Javabinder: Java uses the same event listener for the same type of component Post navigation ← Su – MySQL switch user, display error: resource temporarily unavailable Command prompt window prompt system error 5, access denied? →