In this chapter we are going to learn about the long data type variable of Java programming. We will go through some examples and take a quiz after that.

Declare a long variable x.

long x;

Declare a long variable x to assign a long value 1024.

long x = 1024;

Declare 3 long variables x, y and z in a single line.

long x, y, z;

Declare 3 long variables x, y and z to assign the long value 4297, 670 and 8531 respectively in a single line.

long x=4297, y=670, z=8531;

Declare a long variable x and assign the long value 180 in the second line.

long x;
x = 180;

Declare a long variable x and assign the long value 7654 and change its value to 548 in the next line.

long x = 7654;
x = 548; // now the new value of x is 548