Whenever a Java program is written, all the variables, methods, etc. How does Java utilize heap and stack memory? Stack memory is the fixed memory that is assigned to every individual program, while heap memory is the portion of the memory that is made available for the Java program only when it is required. What is the difference between heap and stack memory in Java? The JVM, or Java Virtual Machine, is an implementation of a specification that details the expected behaviour of a JVM. JDK stands for Java Development Kit, and it includes tools such as JRE and a Java compiler. It contains enough capacity to execute a Java application. The JRE is a Java runtime environment that includes the Java virtual machine and the standard Java APIs. Explain the concepts of JRE, JDK, and JVM? Java is not a pure object-oriented language as it supports primitive data types such as Boolean, char, short, int, float, long, and double. Why is Java not a pure object-oriented language? Once a code is compiled, it can easily be made to run on any JVM, irrespective of the different operating systems and hardware. It means that once the program is written in Java and compiled into byte code, it can easily be made to run on any Java virtual machine. #Java is the only language that works on the principle of writing once and running everywhere. Go through the below mentioned interview questions sorted to give you the best learning aid. Do you want to ace the Java #interview? Would you like to clear the interview with a good score and want to explore this great career opportunity?
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