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Default Value of Data Types in Java

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Data TypeDefault Value (for fields)
byte0
short0
int0
long0L
float0.0f
double0.0d
char‘u0000’
String (or any object)null
booleanfalse

Live Example : Default value of Data Type

Sample Program that will illustrate Default Value Stored in Each Primitive Data Type Variable
public class DefaultValue {
static boolean bool;
static byte by;
static char ch;
static double d;
static float f;
static int i;
static long l;
static short sh;
static String str;

public static void main(String[] args) {
System.out.println("Bool :" + bool);
System.out.println("Byte :" + by);
System.out.println("Character:" + ch);
System.out.println("Double :" + d);
System.out.println("Float :" + f);
System.out.println("Integer :" + i);
System.out.println("Long :" + l);
System.out.println("Short :" + sh);
System.out.println("String :" + str);
}
}

Output :

Bool     :false
Byte :0
Character:
Double :0.0
Float :0.0
Integer :0
Long :0
Short :0
String :null

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