자바 문자열

- 문자열 길이

String txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
System.out.println("The length of the txt string is: " + txt.length());

 :: The length of the txt string is: 26

- 대소문자 변환

String txt = "Hello World";
System.out.println(txt.toUpperCase());
System.out.println(txt.toLowerCase());

 :: HELLO WORLD
 :: hello world

- 문자열 찾기

String txt = "Please locate where 'locate' occurs!";
System.out.println(txt.indexOf("locate"));

 :: 7

- 문자열 연결

String firstName = "John";
String lastName = "Doe";
System.out.println(firstName + " " + lastName);

 :: John Doe

String firstName = "John ";
String lastName = "Doe";
System.out.println(firstName.concat(lastName

 :: John Doe

- 특수문자

String txt = "We are the so-called \"Vikings\" from the north.";
System.out.println(txt);

 :: We are the so-called "Vikings" from the north.

String txt = "It\'s alright.";
System.out.println(txt);

 :: It's alright.

String txt = "The character \\ is called backslash.";
System.out.println(txt);

 :: The character \ is called backslash.