In this post we'll discuss the differences between Instance Variable and Reference Variable in Java, understand them with an example. In a nutshell, a reference variable is any variable that can hold reference of an object and an instance variable is a primitive or non-primitive variable that is declared within a class. Instance VariableReference VariableDeclared within a … [Read more...] about Instance Variable vs Reference Variable in Java
C Program to Find Max and Min in 3D Array
In this example, we'll write a C program to find maximum and minimum elements in a 3D array. Initially we've defined a 3 dimensional array with valuesWe've also initialized the min and max variables with the first value the arrayWe also declare 2 temporary variables to iterate over the arrayWe use nested for loop to iterate over the 3 dimensional arrayWithin the nested … [Read more...] about C Program to Find Max and Min in 3D Array
Substring Based on a Character in Java
String class provides us with powerful String processing methods, out of those, substring is one. In this example, we'll look into examples on substring based on a given character in Java. Unfortunately, String class doesn't provide us with an out of box substring method to get a substring based on a character, however you can use indexOf method in combination of substring … [Read more...] about Substring Based on a Character in Java
Private Final Variable in Java
A variable which is declared as private is not accessible outside of the class. That means you cannot access that private variable using a reference variable after instantiating the class. You can also declare a variable as private final in Java, then not only it will be accessible outside of the class, you will not be able to change the value once it is … [Read more...] about Private Final Variable in Java
Fix java.lang.UnsupportedClassVersionError in Eclipse
Usually people who've installed Eclipse newly receive this error. Let us understand the meaning of this Error. This error gets thrown when JVM tries to run a class file and finds that the JRE version is not within the min and max versions mentioned in the class file. But why this happens? It could be possible that, you've updated the JRE home to the desired JRE installed … [Read more...] about Fix java.lang.UnsupportedClassVersionError in Eclipse