class toupper
{
private String str1,str2;
public void tuper()
{ //str="az";
str2="";
str1=JOptionPane.showInputDialog(null,"Enter a string:");
int len=str1.length();
char ch[]=new char[len];
ch=str1.toCharArray();
for(int i=0;i
{
if(ch[i]>=97 ||ch[i]<=122)
ch[i]-=32;
str2+=ch[i];
}
JOptionPane.showMessageDialog(null,"Original String:"+str1+"\n After Changing case:"+str2);
}
public static void main(String []args)
{
toupper t=new toupper();
t.tuper();
}
}
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