About the Java Online Compiler
Java is a class-based language commonly used for enterprise services, Android applications, and JVM software. Use this compiler for classes, collections, algorithms, and compact console programs.
Place executable examples inside a Main class with a public static void main method. The editor is useful for testing collection operations, loops, exceptions, inheritance, and small algorithms. Keep all required classes in the submitted source so the program can compile as one self-contained file.
Frequently Asked Questions
What is the Java Online Compiler?
Java is a class-based language commonly used for enterprise services, Android applications, and JVM software. Use this compiler for classes, collections, algorithms, and compact console programs.
How do I run Java code?
Enter or edit your program in the Code field, select Run, and read the program result in the Output field.
Which source file does this compiler use?
The submitted code is executed as index.java, using the file format expected for Java.
Can this compiler accept interactive program input?
This streamlined compiler contains only Code and Output fields. Programs should include their required test values directly in the source code.
Where are compilation errors displayed?
Syntax errors, compiler messages, runtime errors, and normal program output are displayed together in the read-only Output field.