It removes beginning and ending spaces of this string. It returns a string in uppercase using specified locale. It returns a string in lowercase using specified locale. It returns the specified substring index starting with given index. Int indexOf(String substring, int fromIndex) It returns the specified substring index. It returns the specified char value index starting with given index. It returns the specified char value index. It returns a split string matching regex and limit. It returns a split string matching regex. Static String equalsIgnoreCase(String another) It replaces all occurrences of the specified CharSequence. String replace(CharSequence old, CharSequence new) It replaces all occurrences of the specified char value. It checks the equality of string with the given object. Static String join(CharSequence delimiter, Iterable elements) Static String join(CharSequence delimiter, CharSequence. It returns true or false after matching the sequence of char value. It returns substring for given begin index and end index. String substring(int beginIndex, int endIndex) It returns substring for given begin index. It returns formatted string with given locale. Static String format(Locale l, String format, Object. Static String format(String format, Object. It returns char value for the particular index The class provides many useful methods to perform operations on sequence of char values. And displays the String objects s1, s2, and s3 on console using println() method. The above code, converts a char array into a String object. Java String literal is created by using double quotes.
There are two ways to create String object: The class is used to create a string object. But in Java, string is an object that represents a sequence of characters. Generally, String is a sequence of characters.
Let's first understand what String in Java is and how to create the String object. For mutable strings, you can use StringBuffer and StringBuilder classes. Whenever we change any string, a new instance is created. The Java String is immutable which means it cannot be changed. It means, we can create strings in Java by using these three classes. String, StringBuffer and StringBuilder classes implement it. The CharSequence interface is used to represent the sequence of characters. The class implements Serializable, Comparable and CharSequence interfaces. Java String class provides a lot of methods to perform operations on strings such as compare(), concat(), equals(), split(), length(), replace(), compareTo(), intern(), substring() etc.
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