[ JAVA ] char to String / String to char / String to char[]

1. char → String

    1) 'a' + ""

    2) String.valueOf('a');

    3) Character.toString('a');

 

2. String → char

    1) public char charAt​(int index)

String name = "heejin";

// 문자열.charAt(index)     <- 리턴값 char
char nameFirst = name.charAt(0);

 

3. String → char[]

    1) public char charAt​(int index)와 for문 사용

char [] nameArray = new char[name.length()];

for (int i = 0; i < nameArray.length; i++) {
	nameArray[i] = name.charAt(i);
} //for

 

    2) public char[] toCharArray()

String name = "heejin";
char [] nameArray = name.toCharArray();