Why nextLine() Reads an Empty String After nextInt() in Java?

The nextLine() Issue: Understanding the Scanner Buffer in Java Almost every Java learner encounters this problem at some point. You write a simple program that asks for an age ( int ) and then a name ( String ). You run it, type an age, press Enter, and the program appears to skip the name input entirely. It feels like a glitch. But in reality, you have encountered what developers call the Scanner buffer issue . To keep things simple for beginners, I like to call it the nextLine() issue . The Problem Code That “Should” Work Take a look at this snippet: Scanner sc = new Scanner ( System . in ); System . out . println ( "Enter an age" ); int age = sc . nextInt (); // Example input: 25 System . out . println ( "Enter a name" ); String name = sc . nextLine (); // Example input: Ahi System . out . println ( "Name: " + name ); System . out . println ( "Age: " + age ); You might expect the following interaction: Enter an age 25 Enter a name Ahi Sadly, it is not that simple. When you type 25 a