toUpperCase()

public String toUpperCase()

Converts all of the characters in this String to upper case using the rules of the default locale.

class StringToUpperCase{
 public static void main(String args[]){
  String str = "eFgHiJkLm";
  String upper = str.toUpperCase();
  
  System.out.println("str = " + str);
  System.out.println("upper = " + upper);
 } 
}

Output

str = eFgHiJkLm
upper = EFGHIJKLM

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