Shameen Shahid

To initialize an array in Java, use the default value, “new” keyword, or call the built-in methods such as IntStream.range(), clone(), setAll(), etc.

The length() method of the Java String and StringUtils class or the length property for Arrays are used to get the string length as shown in this article.

To calculate the area of a triangle, use (base * height) / 2, implement Heron’s formula, or use the Math class methods, etc, as shown in this article.

To sum the numbers using the Java Streams, use different methods such as MapToInt(), reduce(), collect(), and IntStream() as shown in this article.

The Java file copy operations can be performed by using public classes, built-in methods, third-party libraries, or different packages as shown in this guide.

To sort a List in Java, you can use Collections.sort(), Comparator.naturalOrder(), Stream.sorted(), List.sort(), Ordering class of the Guava Library, etc

To determine the ASCII value of a character in Java, you can use Format class, brute force method, type casting, etc as shown in this guide.