Interview question
What are important String methods in Java? Java में important String methods कौन से हैं?
Answer
Java String class provides many useful methods for string manipulation, searching, and transformation.
String str = "Hello World";
str.length();
str.charAt(0);
str.substring(0, 5);
str.toUpperCase();
str.toLowerCase();
str.indexOf("o");
str.lastIndexOf("o");
str.contains("World");
str.replace("Hello", "Hi");
str.trim();
str.split(" ");
String.join("-", "A", "B", "C");Important Methods:
1. length()
2. charAt(index)
3. substring(start, end)
4. toUpperCase()/toLowerCase()
5. indexOf()/lastIndexOf()
6. replace()
7. split(regex)
8. trim()
9. contains()
10. startsWith()/endsWith()Was this answer clear?