Java remains a cornerstone of modern software development, and mastering its foundational classes is key to writing clean, efficient code. In the LabEx Java learning path, we move beyond basic syntax to explore the practical nuances of the Character class. This guide highlights five hands-on labs designed to help you handle Unicode data, validate identifiers, and manage control characters like a pro.
Java Character getNumericValue Method
Difficulty: Beginner | Time: 25 minutes
In Java programming language, getNumericValue() is a method that is a part of the Character class. It provides the numerical integer value of a Unicode character. If the specified character does not have any numeric value, the method returns -1. On the other hand, if the character has a numeric value that cannot be represented as a non-negative integer, the method returns -2.
Practice on LabEx → | Tutorial →
Identifying Ignorable Unicode Characters
Difficulty: Beginner | Time: 30 minutes
In this lab, you will learn about the Java isIdentifierIgnorable(int codePoint) method, which is used to check whether a character can be considered as an ignorable character or a Unicode identifier in Java. In this lab, you will be given step-by-step instructions to create a Java program that demonstrates the use of this method.
Practice on LabEx → | Tutorial →
Determine Java Identifier Start Character
Difficulty: Beginner | Time: 15 minutes
In this lab, you will learn how to use the Java isJavaIdentifierStart(char ch) method. This method helps to determine whether the specified character is the first character in a Java identifier or not.
Practice on LabEx → | Tutorial →
Java Character isISOControl Method
Difficulty: Beginner | Time: 15 minutes
A character is an ISO control character if its code lies in the range of '\u000' through '\u001F' or in the range of '\u007F' through '\u009F'.
Practice on LabEx → | Tutorial →
Java Character IsDigit Method
Difficulty: Beginner | Time: 45 minutes
In this lab, we will learn about Java isDigit(char ch) method, which is a part of Character class. This method checks whether the specified character is a digit or not.
Practice on LabEx → | Tutorial →
These five labs offer a targeted approach to mastering Java's Character class, providing you with the tools to handle text and data with precision. Whether you are a beginner looking to solidify your basics or an intermediate developer refining your validation logic, these interactive exercises in the LabEx playground will sharpen your coding intuition. Start experimenting today and see how these small methods make a big difference in your application's reliability.
Top comments (0)