Month: November 2009

Keyword Description private Available within the curent class. public Available to classes in all packages. protected Available to classes […]

Methods of the Object class: Method Description toString() Returns a string object containing the class name, followed by the […]

try { statements } catch (ExceptionClass exceptionName) { statements } final { statements }

The break and continue statements alter the looping of code. Without a labelName: the break will exit a loop […]

switch(productID) { case 1: productName="abc"; break; case 2: case 3: productName = "xyz"; break; default: produceName = "unknown"; break; […]

java.math.BigDecimal BigDecimal(int) BigDecimal(double) BigDecimal(long) BigDecimal(String) Mehtods of the BigDecimal Add(value) compareTo(value) divide(value,scale,rounding-mode) multipy(value) setScale(scale,rounding-mode) toString() java.math.RoundingMode Two types in […]

How to use static methods to convert primitive types to String objects Interger quantityIntObject = new Integer(quantity); Double priceDoubleObject […]

import java.lang.math; round(float or double) pow(number, power) sqrt(number) max(a,b) min(a,b) random()

import java.text.NumberFormat; There are three static methods in the NumberFormat class: getCurrencyInstance() to format as $99,999.99 getPercentInstance() to format […]

Type Bytes Use byte 1 -128 to 127 short 2 -32,768 to 32,767 int 4 2,147,483,648 to 2,147,483,647 long […]