1 For most people who have all their permanent teeth, this happens rarely and wisdom teeth fail to erupt.  Growth of the lower jaw occurs mostly at the back and this growth is essential to allow the eruption of the third molars (circle). If growth is inadequate, wisdom teeth will remain impacted.
What is ClassLoader in Java. ClassLoader in Java is a class which is used to load class files in Java. Java code is compiled into class file by javac compiler and JVM executes Java program, by executing byte codes written in class file. ClassLoader is responsible for loading class files from file system, network or any other source. There are three default class loader used in Java, Bootstrap, Extension and System or Application class loader. Every class loader has a predefined location, from where they loads class files. Bootstrap ClassLoader is responsible for loading standard JDK class files from rt.jar and it is parent of all class loaders in Java. Bootstrap class loader don't have any parents, if you call String.class.getClassLoader() it will return null and any code based on that may throw NullPointerException in Java.
In Java, you first write a .java file which is then compiled to .class file during compile time. Java is capable of loading classes at run time. The confusion is what is the difference between load and initialize.ow If we change TestLoader.java to: And run the same command again, the output would be: We can see the difference highlighted in red. A.class is loaded only when it is used. In summary, a class is loaded: 1  when the new bytecode is executed.