Java - String String Length

Introduction

String class contains a length() method that returns the number of characters in the String object.

length() method returns the number of characters in the string, not the number of bytes used by the string.

return type of the method length() is int.

The following code computes the length of a string. The length of an empty string is zero.

Demo

public class Main {
  public static void main(String[] args) {
    // Create two string objects
    String str1 = new String();
    String str2 = new String("Hello");

    // Get the length of str1 and str2
    int len1 = str1.length();
    int len2 = str2.length();

    // Display the length of str1 and str2
    System.out.println("Length of \"" + str1 + "\" = " + len1);
    System.out.println("Length of \"" + str2 + "\" = " + len2);
  }//  ww  w .j av a2s.co  m
}

Result

Exercise

• Write code to check if a string starts With Any String value from an array using variable length parameter
• Write code to Return a copy of s padded with leading spaces so that it's length is length.
• Write code to Return a copy of s padded with trailing spaces so that it's length is length.
• Write code to shorten a string by length and add ...
• Write code to get the prefix length found of common characters at the beginning of the strings.
• Write code to get String Length in byte
• Write code to cut a string by length
• Write code to truncate a string regardless of its length.
• Write code to set String Length to shorten string
• Write code to get Random Number by length
• Write code to get Random String by length
• Write code to truncate string to a particular length
• Write code to trim String by length
• Write code to Pads a string with characters so that it is "length" characters long.
• Write code to Split a String into multiple sub-strings of equal length.
• Write code to Truncate the String by removing characters from the right side of the String so it is length characters long.
• Write code to cut a string in the middle
• Write code to Abbreviate a string.

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