Converting Lowercase to Uppercase using Java

  import java.util.*;

class UpperCaseToLowerCase

{

public static void main(String[] args)

{

Scanner sc =new Scanner(System.in);

System.out.println("Enter any Word in lowercase");

String str = sc.nextLine();

char s[]=str.toCharArray();

for(int i=0;i<s.length;i++)

{

if(s[i]>='a' && s[i]<='b')

{

s[i]=(char)((int)s[i]-32);//60 -90 A-Z

  //97-122 a-z

// differnce bwtn upper case and lowecase is 122-90=32 

}

}

System.out.println("Word in Uppercase is");

for(int i=0;i<s.length;i++)

{

System.out.print(s[i]);

}

}

}


Input :-

Enter the word in lowercase 

hello

Output :-

word in Uppercase is 

HELLO


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