constants in java

1//A constant is a variable whose value won't change after it's been defined.
2
3private static final int OUR_CONSTANT = 1;
4
5//We make our constants static and final and give them an appropriate type, 
6//whether that's a Java primitive, a class, or an enum. 
7//The name should be all capital letters with the words separated by underscores, 
8//sometimes known as screaming snake case.

1public final class MyValues {
2  public static final String VALUE1 = "foo";
3  public static final String VALUE2 = "bar";
4}

1final double Pi = 3.1415926536;
2