The java.lang Package Certification Objectives

• 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.
  
  

1.4 Exam : Additional objectives

• Describe the significance of wrapper classes, including making appropriate selections in the wrapper classes to suit specified behavior requirements, stating the result of excecuting a fragment of code that includes an instance of one of the wrapper classes, and writing code using the following methods of the wrappers classees 9e.g, Integer, Double, etc):
  • doubleValue
  • floatValue
  • intValue
  • longValue
  • parseXxx
  • getXxx
  • toString
  • toHexString