Java programming - java string programs | KpTechSolution

Some String Concepts, Keywords & Methods Programming :-

Sample java program-Java String 

 1.Write a java program to Add another String into a declare String.

Source Code :

1. class StringDemo
   {
   public static void main(String[] arg)
   {
   String str = "IICS";
   str = str+ "-COLLEGE";
   System.out.println(str);
   }
   } 

OUTPUT : IICS-COLLEGE

 2.Write a java program to implement "split" method with loop.

Source Code :

1. class StringDemo1
   {
   public static void main(String[] arg)
   {
   String str = "THIS IS A PEN";
   String str2[] = str.split("  ");
   
   
   for(int i=0;i<str2.length;i++)
   {
   System.out.println(str2[i]);
   }
   }
   }

OUTPUT : THIS IS A PEN

Also Read : java basic programs-java programming.

 3.Write a java program to implement some methods of String concepts.

Source Code :

1. class StringDemo2
   {
   public static void main(String[] arg)
   {
   String str = "JAVA";
   System.out.println(str.length());
   for(int i=0;i<str.length();i++)
   
   
   System.out.println(str.charAt(i));
   System.out.println(str.trim());
   System.out.println(str.replace('A','J'));
   System.out.println(str.concat("  LANGUAGE"));
   }
   }

OUTPUT : 4
                J
                A
                V
                A
               JAVA
               JJVJ
               JAVA  LANGUAGE

Also Read : java basic programs-java programming.

 4.Write a java program to perform 4 String Activities Methods.

Source Code :

1. class StringDemo3
   {
   public static void main(String[] arg)
   {
   String str = "JAVA language";
   
   
   System.out.println(str.indexOf('A'));
   System.out.println(str.lastIndexOf('A'));
   System.out.println(str.toLowerCase());
   System.out.println(str.toUpperCase());
   }
   }

OUTPUT : 1
                3
               java language
               JAVA LANGUAGE

 5.Write a java program to perform 3 another String  Activities Methods using Conditional Statements.

Source Code :

1. class StringDemo4
   {
   public static void main(String[] arg)
   {
   String str = "IICS-101-JAVA";
   
   
   if(str.startsWith("IICS"))
   System.out.println("Valid");
   else
   System.out.println("Invalid");
   
   
   if(str.endsWith("JAVA"))
   System.out.println("Valid");
   else
   System.out.println("Invalid");
   
   
   int x = "JAVA".compareTo("JAVA");
   if(x==0)
   System.out.println("I am Matches");
   else
   System.out.println("I am Not Matches");
   }
   }

OUTPUT : Valid
                Valid
                I am Matches

Also Read : java basic programs-java programming. 

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