String str = "Java is a programming language";
String[] words = StringUtils.split(str, " ");
System.out.println(Arrays.toString(words));
[Java, is, a, programming, language]
String[] words = {"Java", "is", "a", "programming", "language"};
String str = StringUtils.join(words, " ");
System.out.println(str);
Java is a programming language
String str = "Java is a popular programming language";
String newStr = StringUtils.replace(str, "popular", "widely-used");
System.out.println(newStr);
Java is a widely-used programming language
String str = "java is a programming language";
String upperCaseStr = StringUtils.upperCase(str);
String lowerCaseStr = StringUtils.lowerCase(str);
String capitalizeStr = StringUtils.capitalize(str);
System.out.println(upperCaseStr);
System.out.println(lowerCaseStr);
System.out.println(capitalizeStr);
JAVA IS A PROGRAMMING LANGUAGE
java is a programming language
Java is a programming language
int[] arr = {1, 2, 3, 4, 5};
int[] newArr = ArrayUtils.copy(arr);
System.out.println(Arrays.toString(newArr));
[1, 2, 3, 4, 5]
int[] arr = {5, 3, 1, 4, 2};
ArrayUtils.sort(arr);
System.out.println(Arrays.toString(arr));
[1, 2, 3, 4, 5]
int[] arr = {1, 2, 3, 4, 5};
int index = ArrayUtils.indexOf(arr, 4);
System.out.println(index);
3
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
</dependencies>
