ข้อมูลจาก : http://www.sun.com/training/catalog/courses/CX-310-035.xml
Section 8: Fundamental Classes in the java.lang Package
Write code using the following methods of the java.lang.Math class: abs, ceil, floor, max, min, random, round, sin, cos, tan, sqrt.
Describe the significance of the immutability of String objects.
Describe the significance of wrapper classes, including making appropriate selections in the wrapper classes to suit specified behavior requirements, stating the result of executing a fragment of code that includes an instance of one of the wrapper classes, and writing code using the following methods of the wrapper classes (e.g., Integer, Double, etc.):
o doubleValue
o floatValue
o intValue
o longValue
o parseXxx
o getXxx
o toString
o toHexString
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