Java: Data Science Made Easy

Finding words in text

The standard Java libraries offer support for searching through text for specific tokens. In previous examples, we have demonstrated the matches method and regular expressions, which can be useful when searching text. In this example, however, we will demonstrate a simple technique using the contains method and the equals method to locate a particular string. First, we normalize our text and the word we are searching for to ensure we can find a match. We also create an integer variable to hold the number of times the word is found:

dirtyText = dirtyText.toLowerCase().trim(); toFind = toFind.toLowerCase().trim(); int count = 0; 

Next, we call the contains method to determine whether the word exists in our text. If it ...