What is lastIndexOf in Java?

Java String lastIndexOf() Method The lastIndexOf() method returns the position of the last occurrence of specified character(s) in a string. Tip: Use the indexOf method to return the position of the first occurrence of specified character(s) in a string.

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How can you tell the last index of a string?

The lastIndexOf() method returns the index (position) of the last occurrence of a specified value in a string. The lastIndexOf() method searches the string from the end to the beginning. The lastIndexOf() method returns the index from the beginning (position 0).

How do I get the last 4 characters of a string?

If data is in not in string form, use String. valueOf() method to convert it to String, first.

String lastFourDigits = “” ; //substring containing last 4 characters.
if (input.length() > 4 ) {
lastFourDigits = input.substring(input.length() – 4 ); }
else. {
lastFourDigits = input; }
System. out. println(lastFourDigits);

How do I change the last occurrence of a string in Java?

Find the index of the last occurrence of the substring. String myWord = “AAAAAasdas”; String toReplace = “AA”; String replacement = “BBB”; int start = myWord. lastIndexOf(toReplace);

How do you reverse a string in Java?

How to reverse String in Java

public class StringFormatter {
public static String reverseString(String str){
StringBuilder sb=new StringBuilder(str);
sb.reverse();
return sb.toString();
}
}

What are the differences between indexOf () and lastIndexOf ()?

indexOf() method returns the position of the first occurrence of a specified value in a string. string. lastIndexOf() method returns the position of the last occurrence of a specified value in a string.

How do you get the last character of a string in Java?

If we want to get the last character of the String in Java, we can perform the following operation by calling the “String. chatAt(length-1)” method of the String class. For example, if we have a string as str=”CsharpCorner”, then we will get the last character of the string by “str. charAt(11)”.

How do I get the last 3 characters of a string?

Getting the last 3 characters To access the last 3 characters of a string, we can use the built-in Substring() method in C#. In the above example, we have passed s. Length-3 as an argument to the Substring() method. so it begins the extraction at index position s.

How do I get the last 5 characters of a string?

To get the last N characters of a string, call the slice method on the string, passing in -n as a parameter, e.g. str. slice(-3) returns a new string containing the last 3 characters of the original string. Copied! const str = ‘Hello World’; const last3 = str.

How do I remove a specific character from a string in Java?

Example of removing special characters using replaceAll() method

public class RemoveSpecialCharacterExample1.
{
public static void main(String args[])
{
String str= “This#string%contains^special*characters&.”;
str = str.replaceAll(“[^a-zA-Z0-9]”, ” “);
System.out.println(str);
}

How do you replace last string?

To replace the last character in a string:

Call the replace() method, passing it a regular expression that matches the last character in the string and the replacement character as parameters.
The replace method will return a new string with the last character replaced.

What is the easiest way to reverse a string?

What is the easiest way to reverse a String in Java?

Instantiate the StringBuffer class by passing the required String as a parameter.
Invoke the reverse() method od the created object.
Convert it into String again using the toString() method.

What is the opposite of indexOf in Javascript?

indexOf & lastIndexOf to get location of a string This is some what opposite of the charAt function which returns the char once a location is given. By using indexOf function we can find out the location and this function returns a number. The first character of the main string is considered as 0 location.

How do I print the last letter of a string?

“print last letter of string java” Code Answer’s

public class Test {
public static void main(String args[]) {
String string = args[0];
System. out. println(“last character: ” +
string. substring(string. length() – 1));
}
}

How do I remove a word from a string in Java?

Given a string and a word that task to remove the word from the string if it exists otherwise return -1 as an output….

Convert the string into a string array.
Iterate the array and check the word not equal to the given word.
Concatenate the word into a new string array name as a new string.
Print the new string.