Sample code:
1. package org.code2care.generics;
2.
3. public class Sample<T> {
4.
5. public static void main(String... args) {
6. T obj;
7. }
8. }
Now when you complete this code using javac you get the below compliation error.
% Sample.java:6: error: non-static type variable T cannot be referenced from a static context
T obj;
^
1 error
Why this error?
The issue occurs at line number 6 because we are trying to declare a generic T type parameter which is of non-static type inside the main method which is of static type.
Fix:
One of the solutions to this issue can be that you can create a non-static method and then make use of the T type parameter.
package org.code2care.generics;
public class Sample<T> {
public void nonStaticMethod(T t) {
System.out.println(t);
}
public static void main(String[] args) {
System.out.println(10);
}
}
Facing issues? Have Questions? Post them here! I am happy to answer!
Author Info:
Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.
Follow him on: X
You can also reach out to him via e-mail: rakesh@code2care.org
More Posts related to Java,
- Get the current timestamp in Java
- Java Stream with Multiple Filters Example
- Java SE JDBC with Prepared Statement Parameterized Select Example
- Fix: UnsupportedClassVersionError: Unsupported major.minor version 63.0
- [Fix] Java Exception with Lambda - Cannot invoke because object is null
- 7 deadly java.lang.OutOfMemoryError in Java Programming
- How to Calculate the SHA Hash Value of a File in Java
- Java JDBC Connection with Database using SSL (https) URL
- How to Add/Subtract Days to the Current Date in Java
- Create Nested Directories using Java Code
- Spring Boot: JDBCTemplate BatchUpdate Update Query Example
- What is CA FE BA BE 00 00 00 3D in Java Class Bytecode
- Save Java Object as JSON file using Jackson Library
- Adding Custom ASCII Text Banner in Spring Boot Application
- [Fix] Java: Type argument cannot be of primitive type generics
- List of New Features in Java 11 (JEPs)
- Java: How to Add two Maps with example
- Java JDBC Transition Management using PreparedStatement Examples
- Understanding and Handling NullPointerException in Java: Tips and Tricks for Effective Debugging
- Steps of working with Stored Procedures using JDBCTemplate Spring Boot
- Java 8 java.util.Function and BiFunction Examples
- The Motivation Behind Generics in Java Programming
- Get Current Local Date and Time using Java 8 DateTime API
- Java: Convert Char to ASCII
- Deep Dive: Why avoid java.util.Date and Calendar Classes
More Posts:
- Python: Fix - TypeError: NoneType object is not iterable - Python
- [Solution] macOS Big Sur Installation: There is not enough free space, Additional Space Required - MacOS
- Java 8 Steam API peek() method with Example - Java
- [Soluiton] You already have the latest version of Android Studio installed - Android
- How to Stream Photos and Videos iPhone to your TV - iOS
- [Error] There was an error connecting to the apple id server - HowTos
- Fix: zsh: command not found: mysql (Mac XAMPP) - zsh
- How to start or open a new bourne-again shell (bash) session on Windows using Command Line CMD - Bash