Java Target

gset run foo.java defaults to the Java target; --target java forces it. Generated code follows the "one public class Main" model:

public class Main {
    public static void main(String[] args) {
        var name = "World";
        var count = 3;
        System.out.println("Hello, " + name);
        while (count > 0) {
            System.out.println(count);
            count = count - 1;
        }
    }
}

How execution works

gset run:

1. writes Main.java into the current working directory,
2. runs javac Main.java && java Main via the configured compiler.java.run pipeline,
3. cleans up Main.class (and Main.java unless --keep).

That means the Java target depends on both javac and java, and it runs from the working directory where you invoke gset.

Mapping table

JavaScript-style line endings get ; appended to expression statements and assignments.

Verified example

var name = "World"
var count = 3
print("Hello, " + name)
while count > 0 {
    print(count)
    count = count - 1
}

$ gset run hello.java --target java
Hello, World
3
2
1

Watch out

• Types: var (Java 10+) requires initialized local declarations. Declarations with var name = … are fine; uninitialized/typed-empty declarations are not valid Java.
• Arithmetic: var n = 5 gives Java int for integer literals — n * n is valid int arithmetic. Use typed annotations (var n int = 5) when you need explicit types.
• Main.java collides per CWD. Running several Java targets in the same directory may overwrite Main.java. Use separate directories or --keep to inspect output.
• Methods on the class shell are not generated yet. Keep behavior in functions for the Java target.