Basic HTML version of Foils prepared 18 May 97

Foil 15 java.lang.Object Wrappers

From Java Tutorial - Spring 1997 Part 4: Multithreading, useful Java classes, I/O, Networking, and the future Peking Tutorial, Web Certificate -- Spring-Summer 1997. by Nancy J. McCracken,Geoffrey C. Fox
1 "types" such as int char float etc. are NOT classes
2 Thus one cannot use methods such as
3 int var;
4 var.toString
5 Thus ALL types have associated wrappers used like
6 Character wrappedchar = new Character(char);
7 now wrappedchar has lots of good methods you can use such as:
8 wrappedchar.equals(anotherobject);
9 wrappedchar.toString();
10 There are also static (class) functions such as:
11 toUppercase(char ch);
12 isUpperCase(char ch);
in Table To:

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