How do you break a line in Java?

In Windows, a new line is denoted using “\r\n”, sometimes called a Carriage Return and Line Feed, or CRLF. Adding a new line in Java is as simple as including “\n” , “\r”, or “\r\n” at the end of our string.

What is the code of indexOf in Java?

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

How do you return an index from a string in Java?

Java String indexOf() Method Example

  1. public class IndexOfExample{
  2. public static void main(String args[]){
  3. String s1=”this is index of example”;
  4. //passing substring.
  5. int index1=s1.indexOf(“is”);//returns the index of is substring.
  6. int index2=s1.indexOf(“index”);//returns the index of index substring.

How do you remove a line break in Java?

replace(/(\r\n|\n|\r)/gm, “”); That should remove all kinds of line breaks. Hope it helps!!

How do you find the index of a specific value in a string?

Copy the element at specific index from String into the char[] using String. getChars() method….Using String. charAt() method:

  1. Get the string and the index.
  2. Get the specific character using String. charAt(index) method.
  3. Return the specific character.

What is the meaning of indexOf >- 1?

Definition and Usage The indexOf() method returns the position of the first occurrence of a value in a string. The indexOf() method returns -1 if the value is not found. The indexOf() method is case sensitive.

What does it mean indexOf (- 1?

no match found
-1 means “no match found”. The reason it returns -1 instead of “false” is that a needle at the beginning of the string would be at position 0, which is equivalent to false in Javascript.

Can you index strings in Java?

Strings in Java are immutable. You can read a char from a specific index with charAt(int index) but you can not modify it. For that you would need to convert to a char array as you suggested and then build a new string from the array.

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