In a small saucepan, mix the orange juice, sugar and cornstarch until smooth. Bring to a boil, stirring constantly; cook and stir for 2 minutes or until thickened. Transfer to a small bowl; cool slightly. Refrigerate, covered, for at least 2 hours.
Just before serving, combine the fruit in a large serving bowl. Drizzle with orange juice mixture; toss gently to coat.