
"Not so fast. Do a couple of tasks, and then you'll have mastered it."
12
Task
Java Multithreading,
level 2,
lesson 13
Locked
StringTokenizer
Using a StringTokenizer, split the query into parts using the String delimiter.
For example,
getTokens("level22.lesson13.task01", ".")
returns a string array
{"level22", "lesson13", "task01"}
12
Task
Java Multithreading,
level 2,
lesson 13
Locked
Changing the encoding
The first parameter of the main method is the name of a file encoded in Windows-1251.
The second parameter of the main method is the name of a file to which you need to write the contents of the first file, but encoded in UTF-8.
24
Task
Java Multithreading,
level 2,
lesson 13
Locked
Phone number verification
The checkPhoneNumber method should check whether the phoneNumber argument is a valid phone number.
Verification criteria:
1) if the number starts with '+', then it must contain 12 digits;
2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits.
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