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String class in Java (Part 4)

>

The String Class: (Part 4)

Indexing Methods of String class:


  • Example: (indexOf -> ch -> two arguments)
    class test {
    public static void main(String ar[]) {
    String str1 = "Good Morning!";
    System.out.println(str1.indexOf('o',5)); // prints 6. Index of ‘o’ after after index 5.
    }
    }
    view raw pattern.java hosted with ❤ by GitHub
  • Example: (indexOf -> ch -> one argument)
    class test {
    public static void main(String ar[]) {
    String str1 = "Good Morning!";
    System.out.println(str1.indexOf('o')); // prints 1. The first Index of ‘o’.
    }
    }
    view raw pattern.java hosted with ❤ by GitHub
  • Example: (indexOf -> string -> two arguments)
    class test {
    public static void main(String ar[]) {
    String str1 = "Good Moorning!";
    System.out.println(str1.indexOf("oo",2)); // prints 6. Index of string “oo” after after index 5.
    }
    }
    view raw pattern.java hosted with ❤ by GitHub
  • Example: (indexOf -> string -> one argument)
    class test {
    public static void main(String ar[]) {
    String str1 = "Good Moorning!";
    System.out.println(str1.indexOf("oo")); // prints 1. The first Index of string “oo”.
    }
    }
    view raw pattern.java hosted with ❤ by GitHub
  • lastIndexOf methods resemble indexOf, only difference is -> they search for the last occurrences instead of the first occurrences.
    Example: All lastIndexOf Methods:
    "Welcome to Java".lastIndexOf('W') returns 0. [one ch argument]
    "Welcome to Java".lastIndexOf('o') returns 9. [one ch argument]
    "Welcome to Java".lastIndexOf('o', 5) returns 4. [two arguments]
    "Welcome to Java".lastIndexOf("come") returns 3. [one string argument]
    "Welcome to Java".lastIndexOf("Java", 5) returns -1. [two arguments ]
    "Welcome to Java".lastIndexOf("Java") returns 11. [one string]
    view raw pattern.java hosted with ❤ by GitHub
Click HERE for the Simple Methods of String class.
Click HERE for the Comparison Methods of String class.
Click HERE for the Substring Methods of String class.

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