AUTOTECHX

Strings in Java - Program 03 ➜ Program 03: Write a program to remove special characters from a string. public class Test { public static void main(String[] args) { // Remove special characters String str = "!@@#Hello @#%#$^#%^#% World123007^&*()"; System.out.println(str); System.out.println(str.replaceAll("[^a-zA-Z0-9]", "")); } } --------Output-------- !@@#Hello @#%#$^#%^#% World123007^&*() HelloWorld123007 -----------------------

Strings in Java - Program 02 ➜ Program 02: Write a program to reverse a string in java using StringBuffer public class Test { public static void main(String[] args) { String s = "Hello"; System.out.println("Original String: " + s); StringBuilder sb = new StringBuilder(s); sb.reverse(); System.out.println("Reverse String: " + sb); } } --------Output-------- Original String: Hello Reverse String: olleH -----------------------

Strings in Java - Program 01 ➜ Program 01: Write a program to reverse a string in java using for loop public class Test { public static void main(String[] args) { String str1 = "Hello"; System.out.println("Original String: " + str1); int size = str1.length(); String rev = ""; for (int i = size - 1; i >= 0; i--) { rev = rev + str1.charAt(i); } System.out.println("Reverse String: " + rev); } } --------Output-------- Original String: Hello Reverse String: olleH -----------------------