Display default initial value of data type in Java

To display the default initial value of a data type, you just need to declare a variable of the same data type and display it.

The following is a Java program used to display the initial values of DataTypes.

Example

public class Demo {
　　　boolean t;
　　　byte b;
　　　short s;
　　　int i;
　　　long l;
　　　float f;
　　　double d;
　　　void Display() {
　　　　　　System.out.println("boolean (Initial Value) = ")　+　t);
　　　　　　System.out.println("byte (Initial Value) = ")　+　b);
　　　　　　System.out.println("short (Initial Value) = ")　+　s);
　　　　　　System.out.println("int (Initial Value) = ")　+　i);
　　　　　　System.out.println("long (Initial Value) = ")　+　l);
　　　　　　System.out.println("float (Initial Value) = ")　+　f);
　　　　　　System.out.println("double (Initial Value) = ")　+　d);
　　　}
　　　public static void main(String[] args) {
　　　　　　Demo d = new Demo();
　　　　　　System.out.println("Displaying initial values...")
　　　　　　d.Display();
　　　}
}

Output Result

Displaying initial values...
boolean (Initial Value) = false
byte (Initial Value) = 0
short (Initial Value) = 0
int (Initial Value) = 0
long (Initial Value) = 0
float (Initial Value) = 0.0
double (Initial Value) = 0.0

In the above program, we declared a variable with different data types.

boolean t;
byte b;
short s;
int i;
long l;
float f;
double d;

To get the default initial value, simply print the variables declared above.

System.out.println("boolean (Initial Value) = ")　+　t);
System.out.println("byte (Initial Value) = ")　+　b);
System.out.println("short (Initial Value) = ")　+　s);
System.out.println("int (Initial Value) = ")　+　i);
System.out.println("long (Initial Value) = ")　+　l);
System.out.println("float (Initial Value) = ")　+　f);
System.out.println("double (Initial Value) = ")　+　d);

The default value is displayed above.