Safe Null Check Using Short-Circuit Evaluation

In this problem, you will create a program that reads a string from standard input, assigns null to the variable if the input is "null", otherwise assigns the input string, then uses text != null && text.length() >= 3 to safely perform a null check and length check via short-circuit evaluation, and prints the result.

Input format: A single line string (null as input is treated as null)

Output format: Result: Valid or Result: Invalid

Learning Objectives:

• Understand how short-circuit evaluation works
• Use the && operator to skip right-side evaluation when the left side is false
• Write null-safe code to prevent NullPointerException