Java viewer
To open a Java file, drop it in the box below. It opens straight away, even with no extension or the wrong one. Your browser opens it on your device: nothing is uploaded.
Open in
Opened on this device, never uploadedDrop or paste another file at any time
What you see
| Java in the viewer | |
|---|---|
| Extensions | .java |
| Colours | highlight.js, Java |
| Large files | Coloured up to 1 MB; past that, plain text with line numbers (up to 64 MB) |
| Extensions | .java |
| Upload | None: opened on your device |
What is a Java file?
In short
A .java file is Java source code, usually one class per file.
The code with line numbers and colours for keywords, strings, comments and numbers, with Wrap lines and Copy. Details lists the text encoding and the number of lines.
How to open a Java file
- Add your Java. Drop the file in the box, choose it or paste it.
- Look at it. The code with line numbers and colours for keywords, strings, comments and numbers, with Wrap lines and Copy. Details lists the text encoding and the number of lines.
- Take it further. Download any file from inside an archive, or open another file.
Questions
A .java file is the source code you can read here. A .class file is what the compiler makes from it for the Java virtual machine; it shows as bytes.
No. It is read in your browser and never uploaded.
No. The viewer runs in your browser and opens the file on your device. Nothing is sent anywhere.