Unit 6: Objects and Strings

• Reading Questions: Object References & Strings (both readings)
• Reading: Object References
• Examples:
• Assigning And Then Reassigning A String
• Assigning Two Strings
• Two Strings Referencing The Same Object (Aliases)
• Two Strings With The Same Characters But Different Addresses
• Using The equals() Method On Two Strings
• Setting An Object To null
• Reading: String Class
• Examples:
• Declaring And Printing Strings
• Concatenating Strings
• Redeclaring Strings
• Using The Methods length(), charAt(), and indexOf()
• The Methods toLowerCase(), toUpperCase(), trim(), and substring()
• The Methods equals(), equalsIgnoreCase(), and compareTo()
• Finding Index Values Where A Word Appears In A Predefined String
• Breaking A Sentence Up Into Words

Practice Tests and Quizzes:

• Old Object Reference Whisper Quiz
• Practice Quiz (Strings & Object Reference)
• Practice Test A (Strings, I/O, Switch)
• Practice Test B (2014-15: Strings & Object Reference)
• Practice Test C (Strings, Switch)
• Practice Test D (Strings, Loops, Switch, Obj Ref)
• Encrypt.java Prompt