To call a non-static method from another class, first, create the class instance in the other class, then call it depending upon its access modifier.
To add days to a date in Java, use the built-in classes like Calendar, LocalDate, Instant, or the DateUtils class of the Apache Commons Library.
A list containing some other lists as its elements is known as a List of Lists. To create a list of lists in Java, use Arrays.asList(), add(), or Stream.of().
In Java, the pop() method pops and removes a single element at a time and that element is always the topmost element of the stack.
In Java, the “finally” block executes regardless of the exceptions. In the “finally” block, you can specify the code that you want to execute always.
In Java, class attributes are variables contained by a specific class. They represent the characteristics of a class and are also known as fields.
To create a method in Java, specify the access modifier, return type, and a valid name. To call a method, specify the method name followed by parenthesis and a semicolon.
In Java, the StringUtils.isNumeric() accepts a string as a parameter and checks if the input string contains all Unicode digits. If yes, it retrieves true.