valueOf():Convert boolean, char, double, float,int,long,object to String

static String valueOf(boolean b): Returns the string representation of the boolean argument.
static String valueOf(char c): Returns the string representation of the char argument.
static String valueOf(char[] data): Returns the string representation of the char array argument.
static String valueOf(char[] data, int offset, int count): Returns the string representation of a specific subarray of the char array argument.
static String valueOf(double d): Returns the string representation of the double argument.
static String valueOf(float f): Returns the string representation of the float argument.
static String valueOf(int i): Returns the string representation of the int argument.
static String valueOf(long l): Returns the string representation of the long argument.
static String valueOf(Object obj): Returns the string representation of the Object argument.


public class Main {
  public static void main(String[] argv) {
    String str = String.valueOf(123);

    System.out.println(str);
  }
}

The output:


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 = 3.3; // 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));
  }
}