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Java String toUpperCase() and toLowerCase() methods
The toUpperCase() method converts all of the characters in this String to upper case using the rules of the default locale
The toLowerCase() method converts all of the characters in this String to lower case using the rules of the default locale.
Example
import java.lang.*; public class StringDemo { public static void main(String[] args) { // converts all upper case letters in to lower case letters String str1 = "SELF LEARNING CENTER"; System.out.println("string value = " + str1.toLowerCase()); str1 = "TUTORIALS POINT"; System.out.println("string value = " + str1.toLowerCase()); // converts all lower case letters in to upper case letters String str2 = "This is TutorialsPoint"; System.out.println("string value = " + str2.toUpperCase()); str2 = "www.tutorialspoint.com"; System.out.println("string value = " + str2.toUpperCase()); } }
Output
string value = self learning centre string value = tutorials point string value = THIS IS TUTORIALSPOINT string value = WWW.TUTORIALSPOINT.COM
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