JAVA題庫:格林模擬試題三（上）(1)

questionsquestion 1)which of the following are legal statements?

1) float f=1/3;
2) int i=1/3;
3) float f=1.01;
4) double d=999d;

question 2)which+'one';
4) byte b=255;

question 4)which of the following statements are true?

1) the garbage collection algorithm in java is vendor implemented
2) the size of primitives is platform dependent
3) the default type for a numerical literal with decimal component is a float.
4) you can modify the value in an instance of the integer class with the setvalue method

question 5)which of the following are true statements?

1) i/o in java can only be performed using the listener classes
2) the randomaccessfile class allows you to move directly to any point a file.
3) the creation of a named instance of the file class creates a matching file in the underlying operating system only when the close method is called.
4) the characteristics of an instance of the file class such as the directory separator, depend on the current underlying operating system