[Windows10][jdk15] 객체 지향 프로그래밍(OOP) Java 실습 02 - String의 여러 기본 함수들 써서 출력해보기

 

 [ 작업 환경 ]

 

Windows10

jdk-15

 

 

 

 

 

 

1. StringMutation.java 실행

 

// 파일명 : StringMutation.java

//********************************************************************
//  StringMutation.java       Java Foundations
//
//  Demonstrates the use of the String class and its methods.
//********************************************************************

public class StringMutation
{
   //-----------------------------------------------------------------
   //  Prints a string and various mutations of it.
   //-----------------------------------------------------------------
   public static void main (String[] args)
   {
      String phrase = "Change is inevitable";
      String mutation1, mutation2, mutation3, mutation4;

      System.out.println ("Original string: \"" + phrase + "\"");
      System.out.println ("Length of string: " + phrase.length());

      mutation1 = phrase.concat (", except from vending machines.");
      mutation2 = mutation1.toUpperCase();
      mutation3 = mutation2.replace ('E', 'X');
      mutation4 = mutation3.substring (3, 30);
      // Print each mutated string
      System.out.println ("Mutation #1: " + mutation1);
      System.out.println ("Mutation #2: " + mutation2);
      System.out.println ("Mutation #3: " + mutation3);
      System.out.println ("Mutation #4: " + mutation4);

      System.out.println ("Mutated length: " + mutation4.length());
   }
}

 

추가로 substring (3, 30) 이기 때문에 index 3의 데이터부터 index 29 까지의 데이터가 남습니다.

C H A N G E

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javac StringMutation.java
java StringMutation