Step by Step solution about How to resolve the algorithm Tokenize a string step by step in the Java programming language

Explanation of the Java Source Code

This Java source code demonstrates various ways to tokenize (split) a string into smaller tokens based on a delimiter (in this case, a comma). Here's a breakdown of what each part of the code does:

1. Using String.split(""):

String toTokenize = "Hello,How,Are,You,Today";
System.out.println(String.join(".", toTokenize.split(",")));

• String.split("") is a method that splits a string into an array of strings by the given delimiter (in this case, a comma).
• The split(",") method returns an array of strings, which is then joined using the String.join(".", ...) method to create a new string with the tokens separated by periods.
• The output will be: Hello.How.Are.You.Today.

2. Using String.split("") with Split Options:

String toTokenize = "Hello,How,Are,You,Today";

String words[] = toTokenize.split(",");//splits on one comma, multiple commas yield multiple splits
               //toTokenize.split(",+") if you want to ignore empty fields
for(int i=0; i<words.length; i++) {
    System.out.print(words[i] + ".");
}

• The split(",") method is used again, but this time it's called with a second parameter that specifies a regular expression pattern.
• The pattern "," indicates that the split should occur on a single comma.
• The + quantifier in the pattern ",+" would match one or more consecutive commas.
• The resulting array words contains the individual tokens.
• The for loop iterates over the tokens and prints them separated by periods.

3. Using StringTokenizer:

String toTokenize = "Hello,How,Are,You,Today";

StringTokenizer tokenizer = new StringTokenizer(toTokenize, ",");
while(tokenizer.hasMoreTokens()) {
    System.out.print(tokenizer.nextToken() + ".");
}

• StringTokenizer is a legacy class that provides methods to tokenize a string into tokens.
• A new StringTokenizer object is created with the string toTokenize and the delimiter ,.
• The hasMoreTokens() method checks if there are more tokens available.
• The nextToken() method returns the next token.
• The tokenized result is printed similar to the previous approach.

In summary, the code demonstrates three different ways to tokenize a string in Java:

• Using String.split("")
• Using String.split("") with split options
• Using StringTokenizer

String toTokenize = "Hello,How,Are,You,Today";
System.out.println(String.join(".", toTokenize.split(",")));

String toTokenize = "Hello,How,Are,You,Today";

String words[] = toTokenize.split(",");//splits on one comma, multiple commas yield multiple splits
               //toTokenize.split(",+") if you want to ignore empty fields
for(int i=0; i<words.length; i++) {
    System.out.print(words[i] + ".");
}

String toTokenize = "Hello,How,Are,You,Today";

StringTokenizer tokenizer = new StringTokenizer(toTokenize, ",");
while(tokenizer.hasMoreTokens()) {
    System.out.print(tokenizer.nextToken() + ".");
}