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17. Which of the following method runs first when a Java program runs? A. main method B. Default Constructor C. Normal constructor D. Mutator method 18. Which of the following is required in the file 1/0 to ensure that all data are saved to the file? A. open () В. с1оse () C. read () D. write ()

17. Which of the following method runs first when a Java program runs? A. main method B. Default Constructor C. Normal constructor D. Mutator method 18. Which of the following is required in the file 1/0 to ensure that all data are saved to the file? A. open () В. с1оse () C. read () D. write ()

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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no explain just give answer for 17,18

17. Which of the following method runs first when a Java program runs? A. main method B. Default Constructor C. Normal constructor D. Mutator method 18. Which of the following is required in the file I/O to ensure that all data are saved to the file? A open () B. close () C. read () D. write ()
Transcribed Image Text:17. Which of the following method runs first when a Java program runs? A. main method B. Default Constructor C. Normal constructor D. Mutator method 18. Which of the following is required in the file I/O to ensure that all data are saved to the file? A open () B. close () C. read () D. write ()
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