OutOfMemoryError in Java is a subclass of java.lang.VirtualMachineError and it’s thrown by JVM when it ran out of heap memory. We can fix this error by providing more memory to run the java application through java options.$>java MyProgram -Xms1024m -Xmx1024m -XX:PermSize=64M -XX:...
In this tutorial, we have covered almost 50+ important core Java interview questions for freshers and experienced candidates. This post on JAVA Interview Questions is prepared to help you understand the basic concepts of Java programming for interview purposes. All the important JAVA concepts are exp...
In this post, we will some important interview questions specifically on Java 8. Java has changed a lot over years and Java 8 has introduced many new features which you need to know when you are preparing for Java interview. Here is a list of most asked Java 8 interview questions....
We have categorized these questions into 3 sections. Let's practice the interview questions and answers on Java programming language:Java Interview Questions and Answers for Freshers Java Interview Questions and Answers for Experienced Advanced Java Interview Questions and Answers...
You can usesplit(String regex)to split theStringinto aStringarray based on the provided regular expression. Why is a character array preferred overStringfor storing passwords in Java? AStringobject is immutable in Java and is stored in the string pool. Once it’s created it stays in the poo...
1.5. What are autoboxing and unboxing? How does it work on arguments to overloaded methods? Since Java 1.5, the compiler automatically converts the primitive data types into correspondingwrapper class types, known asautoboxing. The reverse operation of this (wrapper class types to primitive automatic...
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Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview questions. Here I
Since last year I received so manyemails(weekly more than 10 emails) asking about why not to postJava Interview Questionsand answers for readers. I’ve been thinking about this since last week and finally decided to put topJava Interview questionson Crunchify. ...
Top 25 Java Interview Questions : 1. Which two method you need to implement for key Object in HashMap ? In order to use any object as Key in HashMap, it must implements equals and hashcode method in Java. ReadHow HashMap works in Javafor detailed explanation on how equals and hashcode...