Java String convert primitive type to String

public class Main {
  public static void main(String[] args) {
    char[] charArray = { 'a', 'b', 'c', 'd', 'e', 'f' };
    boolean booleanValue = true;
    char characterValue = 'Z';
    int integerValue = 7;
    long longValue = 10000000000L; // L suffix indicates long
    float floatValue = 2.5f; // f indicates that 2.5 is a float
    double doubleValue = 33.333; // no suffix, double is default
    Object objectRef = "hello"; // assign string to an Object reference

    System.out.printf("char array = %s\n", String.valueOf(charArray));
    System.out.printf("part of char array = %s\n", String.valueOf(charArray, 3, 3));
    System.out.printf("boolean = %s\n", String.valueOf(booleanValue));
    System.out.printf("char = %s\n", String.valueOf(characterValue));
    System.out.printf("int = %s\n", String.valueOf(integerValue));
    System.out.printf("long = %s\n", String.valueOf(longValue));
    System.out.printf("float = %s\n", String.valueOf(floatValue));
    System.out.printf("double = %s\n", String.valueOf(doubleValue));
    System.out.printf("Object = %s\n", String.valueOf(objectRef));
  }// w w  w  .ja  va2  s.  co  m
}