. Làm thế nào để bạn có được trình biên dịch để cho bạn thấy những gì nó làm như nó hoạt động? 9. Làm thế nào để các tập tin mã byte Java để chạy các chương trình tương tự trên các loại khác nhau của máy tính? Tại sao phương pháp đo lường của giao diện đo có tham số | Java Concepts 5th Edition 17. 0 18. An accessor it doesn t modify the original string but returns a new string with uppercase letters. 19. -5 -10 provided the method is called immediately after storing the new rectangle into box. 20. x 30 y 2 5 21. Because the translate method doesn t modify the shape of the rectangle. 22. Add the statement import j ava .util. Random at the top of your program. 23. toLowerCase 24. Hello Space only the leading and trailing spaces are trimmed. 25. Now greeting and greeting2 both refer to the same String object. 26. Both variables still refer to the same string and the string has not been modified. Recall that the toUpperCase method constructs a new string that contains uppercase characters leaving the original string unchanged. 79 27. Modify the EmptyFrameViewer program as follows 80 300 300 Hello World 28. Construct two JFrame objects set each of their sizes and call setVisible true on each of them. 29. Rectangle box new Rectangle 5 10 20 20 30. Replace the call to 15 25 with box new Rectangle 20 35 20 20 31. The compiler complains that g doesn t have a draw method. 32. new 75 75 50 50 Chapter 2 Using Objects Page 66 of 67 Java Concepts 5th Edition 33. segmentl new 0 0 10 30 segment1 segment2 new 10 30 20 0 segment2 34. V 0 30 35. 0 0 255 36. First fill a big red square then fill a small yellow square inside new Rectangle 0 0 200 200 new Rectangle 50 50 100 100 Chapter 2 Using Objects Page 67 of 67 Java Concepts 5th Edition 81 Chapter 3 Implementing Classes Chapter Goals To become familiar with the process of implementing classes To be able to implement simple methods To understand the purpose and use of constructors To understand how to access instance fields and local variables To appreciate the .
