Garbage collection Objects created during program execution are automatically removed by a special module of Java Virtual Machine called Garbage Collector. When an object is not referenced by any threads…
Trim a string means removing blank spaces or white spaces from left and right of the string where left means from the beginning and right means from the end. There…
Reversing a list or an arraylist means putting the last element at first position, second last element at second position and finally, placing the first element as the last. This…
What is a constructor? A constructor in java is a special method which has the same name as its class and may or may not receive any arguments. A constructor…
Reversing a string means creating a new string whose order of characters is the opposite. That is, last character is at first position, second last is at second and so…
Date comparison is a fundamental requirement for any application. Often when displaying data on a page, you need to display the latest record at the top and then the records…
You can check for the presence of vowels(a, e, i, o, u) in a string and list them using a java program. There are following two ways in which this…
What is a stack A stack is a data structure which holds elements in Last-In-First-Out(LIFO) order. This means that the elements which are inserted first on the stack will be…
What is final keyword final is a reserved word or a keyword in java. It can be applied to A variable. This variable may be a method local variable or…