Question

Write Java Programs to perform the following: 1. To create a new String object 2. To find the length of the string 3. Concatenation operator 4. To display the content in String array 5. A complete Java Program that incorporates the following String methods taught in class a. toUpperCase()) b. to LowerCase()) C. replace('0','A')) d. s1.length() e. compareTo(s1))

Answer 1

package Chegg;

public class StringOperations {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       //creating new string oblect
       String s1 = new String("Hello there");
       String s2 = new String("How are you?");
      
       //to find the length of string and display it
       System.out.println("Length is "+s1.length());
      
       //concatanation operator is +
       System.out.println("concatanation "+s1+s2);
      
       //string array
       String arr[] = {"hello","there","How","are","you"};
       System.out.println("String Array");
       for(int i=0;i<arr.length;i++) {
           System.out.println(arr[i]);
       }
      
       //uppercase
       System.out.println("Uppercase "+s1.toUpperCase());
      
       //lowercase
       System.out.println("Lowercase "+s2.toLowerCase());
      
       //replace
       System.out.println("Replace "+s2.replace('o', 'A'));
      
       //compare
       System.out.println("Compare "+s2.compareTo(s1));
      
       //substring
       System.out.println("Substring "+s1.substring(4));
      
       //substring between
       System.out.println("Substring between "+s2.substring(2, 10));
      
       //index of
       System.out.println("indexof "+s1.indexOf('t'));
      
       //index of
       System.out.println("indexof "+s2.indexOf('u', 10));
      
       //char at
       System.out.println("charAt "+s1.charAt(4));
   }

}

Problems Tasks @ Console X Properties <terminated> String Operations (Java Application] /usr/lib/jvm Length is 11 concatanation Hello thereHow are you? String Array hello there How are you Uppercase HELLO THERE Lowercase how are you? Replace HAw are yAu? Compare 10 Substring o there Substring between w are yo indexof 6 indexof 10 charAt o