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public class Counter {
public Integer count = 0;
public Boolean isDark = false;
public void updateUI() {
System.debug('Counter: ' + count);
System.debug('Theme: ' + (isDark ? 'Dark' : 'Light'));
}
public void increment() { count++; updateUI(); }
public void decrement() { count--; updateUI(); }
public void reset() { count = 0; updateUI(); }
public void toggleTheme() { isDark = !isDark; updateUI(); }
}
// Simulate actions
Counter c = new Counter();
c.updateUI();
c.increment();
c.increment();
c.toggleTheme();
c.decrement();
c.reset();Coding works best on desktop or with an external keyboard.