how to find a string in a sentence in java

To find a string in a sentence in Java, you can use the contains() method of the String class.

Here's an example of how to find a string in a sentence in Java:

String sentence = "The quick brown fox jumps over the lazy dog.";
String target = "fox";

if (sentence.contains(target)) {
  System.out.println("Found string: " + target);
} else {
  System.out.println("String not found: " + target);
}

In the above example, the contains() method is used to search for the target string in the sentence. If the target string is found, a message is printed to the console. If the target string is not found, a different message is printed.

Alternatively, you can use the indexOf() method of the String class to find the index of the first occurrence of the target string in the sentence. For example:

String sentence = "The quick brown fox jumps over the lazy dog.";
String target = "fox";

int index = sentence.indexOf(target);

if (index != -1) {
  System.out.println("Found string at index " + index);
} else {
  System.out.println("String not found: " + target);
}

In the above example, the indexOf() method returns the index of the first occurrence of the target string in the sentence. If the string is not found, the method returns -1.