How do you replace a character with a blank space in Java?

Program:

1. public class ReplaceSpace.
2. {
3. public static void main(String[] args) {
4. String string = “Once in a blue moon”;
5. char ch = ‘-‘;
6. //Replace space with specific character ch.
7. string = string. replace(‘ ‘, ch);
8. System. out. println(“String after replacing spaces with given character: “);

Can a string be empty in Java?

The Java programming language distinguishes between null and empty strings. An empty string is a string instance of zero length, whereas a null string has no value at all. An empty string is represented as “” . It is a character sequence of zero characters.

How do you replace a character in a string with spaces?

Define the character with which the spaces are to be replaced. Use the replaceAll() method to replace the spaces with the given specified character. Now, print the entered string after replacing the spaces with the specified character.

How do you replace all spaces in Java?

How do you remove all white spaces from a string in java?

1. public class RemoveAllSpace {
2. public static void main(String[] args) {
3. String str = “India Is My Country”;
4. //1st way.
5. String noSpaceStr = str.replaceAll(“\\s”, “”); // using built in method.
6. System.out.println(noSpaceStr);
7. //2nd way.

How do you replace a character in Java?

The Java string replace() method will replace a character or substring with another character or string. The syntax for the replace() method is string_name. replace(old_string, new_string) with old_string being the substring you’d like to replace and new_string being the substring that will take its place.

Is string null or empty Java?

In Java, there is a distinct difference between null , empty, and blank Strings. An empty string is a String object with an assigned value, but its length is equal to zero. A null string has no value at all.

Why is empty string false?

All false , 0 , empty strings ” and “” , NaN , undefined , and null are always evaluated as false ; everything else is true .

How do you replace a word in a string without using replace method in Java?

To replace a character in a String, without using the replace() method, try the below logic. Let’s say the following is our string. int pos = 7; char rep = ‘p’; String res = str. substring(0, pos) + rep + str.

How do you replace all spaces in a string in Java?

How do you replace a string in a method in Java?

Java String replace(CharSequence target, CharSequence replacement) method example

1. public class ReplaceExample2{
2. public static void main(String args[]){
3. String s1=”my name is khan my name is java”;
4. String replaceString=s1.replace(“is”,”was”);//replaces all occurrences of “is” to “was”
5. System.out.println(replaceString);

What is the use of replace() method in Java?

The Java replace () string method allows the replacement of a sequence of character values. The Java replace () function returns a string by replacing oldCh with newCh. Example of replace () in Java: Let’s understand replace () in Java function with an example:

How to replace all occurrences of a string in Java?

Java String replaceAll () method finds all occurrences of sequence of characters matching a regular expression and replaces them with the replacement string. At the end of call, a new string is returned by the function replaceAll () in Java.

How to eliminate spaces at the beginning and end of string?

To eliminate spaces at the beginning and at the end of the String, use String#trim() method. And then use your mytext.replaceAll(“( )+”, ” “). You can first use String.trim(), and then apply the regex replace command on the result.

How do you replace a char in a string in Java?

Java String replace () The java string replace () method returns a string replacing all the old char or CharSequence to new char or CharSequence. Since JDK 1.5, a new replace () method is introduced, allowing you to replace a sequence of char values.