Surprise! Java lets you overflow : Data Type Introduction « Data Type « Java Tutorial

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Java Tutorial » Data Type » Data Type Introduction

2. 1. 5. Surprise! Java lets you overflow


public class MainClass {



  public static void main(String[] args) {

    int big = 0x7fffffff; // max int value

    System.out.println("big = " + big);

    int bigger = big * 4;

    System.out.println("bigger = " + bigger);

  }

}

big = 2147483647
bigger = -4

2. 1. Data Type Introduction
	2. 1. 1.	The Primitive Types
	2. 1. 2.	Size for Java's Primitive Types
	2. 1. 3.	Default values for primitives and references
	2. 1. 4.	Literals
	2. 1. 5.	Surprise! Java lets you overflow
	2. 1. 6.	Wrapping a Primitive Type in a Wrapper Object: boolean, byte, char, short, int, long, float, double
	2. 1. 7.	Print the limits of primitive types (e.g. byte, short, int ...) in Java
	2. 1. 8.	Get the minimum and maximum value of a primitive data types
	2. 1. 9.	Shows default initial values
	2. 1. 10.	Primitive utilities
	2. 1. 11.	Return primitive type the passed in wrapper type corresponds to

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