《Java语言程序设计》模拟题二(国外英文资料).docVIP

《Java语言程序设计》模拟题二(国外英文资料) Java programming language simulation questions two 2003-12 I. judgment questions (1 points per subject, 15 points each) 1. objects can be assigned, so long as the assignment number is used, it is equivalent to generating a new object of the same property as the assigned object. () The character type of 2.Java uses Unicode encoding, and each Unicode code takes 16 bits. () 3. class definitions do not define constructors, so constructors are not required. () The 4. class and its properties and methods can be modified with only one modifier at the same time. () The 5. interface is a special class, so the interface can also inherit, and the child interface will inherit all the constants and abstract methods of the parent interface. () 6., if P is the object of the parent class Parent, and C is the object of the subclass Child, the statement c=p is correct. () 7. the final class cannot send a child class, and the final method cannot be covered. () 8., if you want the program to process all the exceptions, including unknown exceptions, you can add a catch (Exception, e) {{}} after all the catch blocks. () The object of the String class in the 9. Java can be either a string constant or a string variable. () In 10.Java, the elements of an array can be either a simple data type or a class of objects. () The screen coordinates of 11.Java are in pixels, and the lower left corner of the container is defined as the starting point of the coordinates. () 12. all keyboard events are represented by objects of the KeyEvent class. () The standard input object of the 13.Java system is System.in, and there are two standard output objects, the standard output System.out and the standard error output System.err, respectively. () 14. when you create an Vector object constructor is given a number which can contain elements, should be careful not to use this value beyond. () 15. user defined graphical interface elements can also respond to user actions with interacti