// DrJava saved history v2
8 + 3
7 + 2
3.0 + 5.6
9 / 2
// Java has different types.
// A type is a set of values and a set of operations on
// those values.
// This is a Java comment, because the line starts with //
// Java ignores everything after //
Java has different types.
// 9 and 2 are type int, so the expression "9 / 2" gives
// us an int result.
9.0 / 2.0
// 9.0 and 2.0 are of type double, so the expression
// evaluates to give a double value (4.5)
9 / 2.0
// operations on ints and doubles: + - / *
Integer.MAX_VALUE
Integer.MIN_VALUE
Double.MIN_VALUE
Double.MAX_VALUE
1.0 / 3
// In Java, real numbers are called floating-point numbers.
// Floating-point numbers are approximations to real numbers.
1.0f / 3 
// Two floating-point types: float and double
// We'll usually use type double.
// Double has twice as many significant digits as float.
Float.MAX_VALUE
Float.MIN_VALUE