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mudita sinha
que 2
1 Answer(s)      4 years and 6 months ago
Posted in : Java Beginners


WAP to input a string & print out the text withthe uppercase & lowercase letters reversed,but all other characters should remain the same.
eg:
input:WelComE TO School

output:wELcOMe to sCHOOL

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February 18, 2010 at 2:34 PM


Hi Friend,

Try the following code:

import java.util.*;

class CaseConverter{
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.print("Enter string: ");
String str=input.nextLine();
StringBuffer sb=new StringBuffer();
char ch[]=str.toCharArray();
for(int i=0;i<ch.length;i++){
if(ch[i]==' '){
sb.append(" ");
}
if(Character.isLowerCase(ch[i])){
char cha=Character.toUpperCase(ch[i]);
sb.append(Character.toString(cha));
}
else if(Character.isUpperCase(ch[i])) {
char cha=Character.toLowerCase(ch[i]);
sb.append(Character.toString(cha));
}
}
System.out.println(sb.toString()+" ");
}
}

Thanks


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