string methods¶

String[] myArray;

ArrayList<String> flexibleList = new ArrayList<String>();

public static final String charToString(char c) {
    return Character.toString(c);
}

public static final char StringToChar(String str) {
    return str.charAt(0);
}

char[] chararray = str.toCharArray();

mystr.getChars(0, 16, chararr, 0);

Character[] arraychars = str.chars()
                            .mapToObj(c -> (char) c)
                            .toArray(Character[]::new);

// convert an array to string
String str = Arrays.toString(strarray);

StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < strarray.length; ++i) {
    stringBuilder.append(strarray[i] + " ");
}

import java.util.StringJoiner;
StringJoiner stringJoiner = new StringJoiner(";;;", "[", "]");

import java.util.stream.*;
import java.util.Arrays;

return Stream.of(strarray).collect(Collectors.joinint());

String[] strarray = str.split(",");

import java.util.regex.Pattern;
String splitpattern = "\\s\\s";
Pattern pattern = Pattern.compile(splitpattern);

import java.util.StringTokenizer;

StringTokenizer tokenizer = new StringTokenizer(str);
String[] strarray = new String[tokenizer.countTokens()];

// Add tokens to an array
int i = 0;
while (tokenizer.hasMoreTokens()) {
    strarray[i] = tokenizer.nextToken();
    ++i;
}

char charAt(int index);
int compareTo(String anotherString);
String concat(String str);
int hashCode();
int indexOf
int length();
String replace
String replaceAll
String[] split(String regex);
boolean startsWith(String prefix);
String substring(int beginIndex);
String toLowerCase();
String toUpperCase();
String trim();

isBlank();

lines(); // returns a stream containing a collection of all * substrings split by lines(needs java.util.stream.Collectors)

strip(); // Removes all white space from strings, unicode-aware

repeat(int); // repeats a string(int) times

String block = """
Brain went on to say that
'Text blocks are much more readable
And much easier to debug or follow'
""";