How to run java code in notepad
Although Notepad cannot run Java code directly, it can be achieved by using other tools: using the command line compiler (javac) to compile the code and generate a bytecode file (filename.class). Use the Java interpreter (java) to interpret bytecode, execute the code and output the result.
Run Java code in Notepad
Notepad is a basic text editor that cannot run Java code directly. Other tools are required to run Java code, such as a Java compiler or a Java interpreter.
method:
- Using the command line compiler (javac)
- Open a command prompt (Windows) or terminal (Mac/Linux).
- Navigate to the directory where the file containing the Java code resides.
- Compile Java files with the following command:
javac filename.java - This will generate a bytecode file named
filename.class.
- Using Java Interpreter (java)
- Open a command prompt or terminal.
- Run Java code with the following command:
java filename - This will directly interpret the Java code without compilation steps.
Notice:
- Make sure that the Java Runtime Environment (JRE) is installed on the computer.
- Make sure that the Java file syntax is correct and does not contain errors.
- The file extension must be
.javaand the bytecode file must be.class.
Example:
- Compiled with
javac:
<code>javac HelloWorld.java</code>
- Run with
java:
<code>java HelloWorld</code>
The above code will output the following:
<code>Hello, World!</code>
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