Java

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 convert a Set to a List in Java, you can use different methods, such as “List.addAll()”, “List Constructor”, “Java 8 Stream API”, “copyOf()”, etc.

To check the Java version on Windows, Linux, or Mac operating systems, run the “java –version” command from the respective terminal.

To format a string with printf() in Java, execute the “System.out.printf()” statement with the “%s” or “%S” format specifier.

In Java, you can sort a map by value using three methods: “Collections.sort()”, “Stream().sorted()”, and “Custom Comparators”.

To Use the StringUtils class in Java, add its corresponding Apache Commons dependency in a “pom.xml” file of your maven project.

The “String.replaceAll()” method is used to replace all occurrences of a specific character, word, or substring, with a new character, word, or substring.

To use the String substring() method in Java, follow the syntax “inputString.substring(int startIndex);” or “inputStr.substring(int startIndex, int endIndex);”.