This is one of the tricky Java interview questions, which some of you might have encountered. There is a very subtle difference betweengetClass()and instanceof operator, which can cause potential issues with respect to theequals()method. Coming to the point, the key difference between them is...
In this example, when the "test" profile is active, an instance of InMemoryCartService will be injected into the cartService field of the ShoppingCart class. When any other profile is active, an instance of DatabaseCartService will be injected. Using @Qualifier in conjunction with Spring prof...
Like PATH, there is another variable of similar nature that is CLASSPATH. This variable is set to locate.classfiles while compiling java programs in case they have any dependency. Both, PATH and CLASSPATH are environment variables and we need to set them while working with Java programming lan...
Difference between String Class and String buffer class String class is Immutable whereas String Buffer class is Mutable. String class consumes more memory whenever we append too many strings, whereas String buffer consumes very less memory. String class performance is low as compared to string Buffer...
Apart from this major difference, here are some other differences between the two: A class can only inherit from one abstract class at a time. However, a class may inherit from multiple interfaces. Interfaces are used to implement the concept of multiple inheritance in object oriented programming...
The major difference between Enumeration and Iterator in java is that by using Enumeration, we can only traverse a Collection but by using Iterator, we can also remove an element while traversing the Collection.
In this tutorial, we’ll discuss the difference between these two methods. 2. Introduction Before diving into the discussion of the difference, let’s establish some common ground. BothputIfAbsent()andcomputeIfAbsent()are methods provided by theMapinterface in Java, and they share a common goal...
___ 5.) a.) Every physical representation that there is in a b.) class is referred to as an c.) object. Answer Key 1. a Java is the programming language, and the physical manifestations of a class in it are called object and instance. 2. NO ERROR It was generally used...
What is the difference between properties and attributes in HTML? attributes属于html中的属性 翻译为特性 properties属于DOM对象中的属性 翻译为属性 正常我们创建一个HTML元素时,浏览器会解析出这个对象和它拥有的一些属性 比如 这个input就有两个属性。 当我们通过DOM对象去获取属性,他们却不一定是简单的1对1的...
When running the diff betweentext2andtext1,we will get this result: [Diff(EQUAL,"ABC"), Diff(DELETE,"FG"), Diff(INSERT,"DE"), Diff(EQUAL,"LMN")] 4.StringUtils The class fromApache Commonshas amore simplistic approach. First, we’ll addthe Apache Commons Lang dependencyto ourpom.xmlfi...