For sweet-sour sauce, combine the cornstarch, sugar, pineapple juice, vinegar, ketchup and soy sauce in a saucepan until smooth. Bring to a boil; cook and stir for 1-2 minutes or until thickened. Remove from the heat; set aside.
In a large skillet, stir-fry the shrimp, bean sprouts, cabbage, onion and carrot in oil until crisp-tender; cool slightly. Stir in pepper and salt. Position egg roll wrappers with a long edge facing you. Spoon 1/4 cup of shrimp mixture on the bottom third of each wrapper. Fold bottom over filling; fold sides over filling toward center. Moisten top edge with water; roll up tightly to seal.
In a deep saucepan, electric skillet or deep-fat fryer, heat oil to 375°. Fry egg rolls, a few at a time, for 4-5 minutes or until golden brown, turning often. Drain on paper towels.
Serve with sweet-sour sauce.
Yield: 1 dozen.