What are some examples of string manipulation in Java?

What are some examples of string manipulation in Java?

In Java, string manipulation can include operations like concatenation, substring extraction, and replacing characters. For example, you can use String.concat() to join two strings.

Can you show me how to concatenate two strings?

Sure! You can concatenate two strings using the + operator or the concat() method. For example:

String str1 = "Hello";
String str2 = "World";
String result = str1 + " " + str2; // result is "Hello World"

What about extracting a substring?

To extract a substring, you can use the substring() method. For example:

String str = "Hello World";
String sub = str.substring(0, 5); // sub is "Hello"

How can I replace a character in a string?

You can replace a character using the replace() method. For example:

String str = "Hello World";
String newStr = str.replace('o', 'a'); // newStr is "Hella Warld"