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....
String toUppercase ():This method converts all of the characters in the invoking string to uppercase. For example, str1.toUppercase(); //returns HELLO JAVA public class StringtoUpperCase { public static void main(String[] args) { String strl = "hello java"; System.out.println("strl...
Java Code: // Define a public class named Exercise30.publicclassExercise30{// Define the main method.publicstaticvoidmain(String[]args){// Declare and initialize a string variable.Stringstr="The Quick BroWn FoX!";// Convert the above string to all uppercase.Stringupper_str=str.toUpperCase()...
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.out.println(upcaseAll(s)); }/*fromwww.java2s.com*/ public static String upcaseAll(String s) { if (s == null || s.equals("")) { return ""; } StringBuffer sb = new StringBuffer(); char[] c = s.toCharArray(); ...
Learn how to convert a string to uppercase in Java with this simple and effective method. Enhance your Java skills with practical examples.
importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入字符串: ");StringinputString=scanner.nextLine();scanner.close();StringlowercaseString=inputString.toLowerCase();StringuppercaseString=inputString.toUpperCase();System....
* is the write location in result *//* Just copy the first few upperCase characters. */System.arraycopy(value,0, result,0, firstLower); String lang = locale.getLanguage();booleanlocaleDependent = (lang =="tr"|| lang =="az"|| lang =="lt");char[] upperCharArray;intupperChar;int...
Java String toUpperCase() transforms a string by replacing all lowercase characters to uppercase while leaving any characters already in uppercase.
tuUpperCase()//返回一个新的字符串,其中所有字母大写 toLoverCase()返回一个新的字符串,其中所有字母小写 concat(s1)//将本字符串和s1字符串连接起来返回一个新的字符串 给你们举个例子具体这些方法是怎么用的,因为总是有很多刚刚学还没入门的小伙伴,不会用,就是理论和实践不能很完全的结合。