How to Read 2 Char in a String

Introduction to Java Replace Char in String

Replacing a graphic symbol in a string refers to placing another graphic symbol at the place of the specified graphic symbol.  An alphabetize represents specified characters. In java, the String class is used to supercede the character & strings. A string is the class of coffee.lang packages.

In programming, developers confront many situations where they accept to need to replace characters in the string. Coffee provides multiple methods to replace the characters in the String. Remove is one of the important methods used in replacing the characters. while using the remove method, a few things should be think

1. String in Java is immutable, so later on replacing the graphic symbol, a new string is created.
2. The string variable before applying the supervene upon method remains the aforementioned after applying the replace method.
3. Supervene upon method replaces all the characters in the string with the new grapheme.

Syntax:

In the post-obit syntax, it is given how a character is existence replaced. There are two parameters in the replace method: the first parameter is the grapheme to replace & the second one is the character to be replaced with.

String supplant(char oldChar, char newChar):
//OR
Cord replaceFirst(char oldChar, char newChar):
//replaces only the starting time occurrence of the character

In the second line of syntax, the replaceFirst method is used to replace only the grapheme's first occurrence.

Examples of Java Supplant Char in Cord

Below are the examples of Java Replace Char in String:

Instance #ane

In this instance, we tin encounter how a character in the string is replaced with another one.

1. In the first line taking input from the user every bit a string.
2. Farther request character as an input to replace in the provided string.
3. The replace method creates a new string with the replaced grapheme in the next line because the string in coffee is immutable.

Lawmaking:

import java.util.*;
public grade JavaReplaceCharExample{
public static void principal(Cord[] args){
Scanner input = new Scanner(System.in);
Arrangement.out.println("Hi, delight enter the String");
Cord str = input.nextLine();
Organization.out.println("Enter the character to replace");
char ch = input.next().charAt(0);
System.out.println("Enter the character to be replaced with");
char newCh = input.next().charAt(0);
String newStr = str.replace(ch, newCh);
//displaying new string after applying replace method
System.out.println(newStr);
}
}

Output:

Example #2

In this example, replaceFirst is used to only replace the first occurrence of the character in this cord.

Code:

import java.util.*;
public class JavaReplaceCharExample2{
public static void main(String[] args){
//2d string to replace the character
String str = "All that glitters is not gold";
//displaying string before applying replace method
System.out.println("\n" + str);
//replacing grapheme p from b
Cord newStr = str.replace("one thousand", "b");
//displaying string after replacing the graphic symbol
System.out.println(newStr);
//second string to replace the character
String judgement = "A true cat has nine lives";
//displaying string earlier applying supercede method
System.out.println("\north" + judgement);
//replacing graphic symbol n from yard
String newSentence = sentence.replaceFirst("n", "k");
//displaying new string after applying replace method
Organisation.out.println(newSentence);
}
}

Output:

The output of the program is given below. In the output screenshot, the first judgement character "g" is replaced by "b". In the 2d sentence, simply the first occurrence of the syntax "n" is replaced with "m".

Example #3

In this example,  start replacing a piping separated value with the comma. After replacing '|' to ",", in the side by side line replacing the "A" character to "i" using the supplant method.

Lawmaking:

import java.util.*;
public course JavaReplaceCharExample3{
public static void main(String[] args){
//second string to replace the character
String str = "Alabama|California|Florida|Texas|New Bailiwick of jersey|Arizona";
//displaying cord earlier applying supersede method
Arrangement.out.println("\northward" + str);
//replacing | with the comma
String newStr = str.replace('|', ',');
//displaying string later on applying replace method
Organization.out.println("\due north" + newStr);
//replacing the character A with the i
String reNewedStr = newStr.supplant('A', 'i');
//displaying string before applying replace method
System.out.println("\north" + reNewedStr);
}
}

Output :

Example #four

In this case, we can meet how a cord can exist replaced without using the supplant method. The string before & afterwards the specified character is stored in a separate variable in the beneath-given plan. Further in the program, it is concatenated with the grapheme to be replaced with.

Lawmaking:

import java.util.*;
public class JavaReplaceCharExample4{
public static void main(Cord[] args){
//second string to replace the character
Cord str = "Be slow in choosing, but slower in changing.";
//displaying string before applying replace method
Organisation.out.println("\n" + str);
int index = 3;
char chToReplacedWith = 'b';
Cord strBeforeChar = str.substring(0, index);
Cord strAfterChar  = str.substring(index + 1);
Cord newStr  = strBeforeChar + chToReplacedWith + strAfterChar;
//displaying string before applying supervene upon method
Organisation.out.println("\n" + newStr);
}
}

Output :

Determination

The in a higher place-given article describes how to replace char in a cord, what methods are provided past coffee packages to work with the cord. In the given examples, it is given how string grade methods tin can be used to replace characters in a cord.

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