joplin/packages/app-cli/tests/enex_to_md/code5.md

public class SwapIntegerWithoutTemp {

    public void swapAddition() {
        int a = 3;
        int b = 5;

        a = a + b; // a=8, b=5
        b = a - b; // a=8, b=3
        a = a - b; // a=5, b=3
    }
}