Learn basic language constructs to start writing applications with the Java programming language.
Arrays ArrayDemo.java creates an array, puts some values in it, and displays the values. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. ArrayCopyDemo.java uses the arrayCopy method to copy some elements from one array to another. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. ArrayofArraysDemo.java creates an array and uses an initializer to populate it with four subarrays. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. ArrayofArraysDemo2.java creates an array of arrays by explicitly writing code to create each subarray. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. ArrayofIntegersDemo.java creates an Integer object and places it in the array during each iteration of a for loop. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. ArrayofStringsDemo.java uses an array initializer to create an array containing three string objects and puts the strings in all lowercase letters. For supporting information see The Java Tutorial: Object Basics and Simple Data Objects. Control Flow BreakDemo.java contains a for loop that searches for a particular value within an array. For supporting information see The Java Tutorial: Nuts and Bolts. BreakWithLabelDemo.java searches for a value in a two-dimensional array. For supporting information see The Java Tutorial: Nuts and Bolts. ContinueDemo.java steps through a string buffer and checks each letter. For supporting information see The Java Tutorial: Nuts and Bolts. ContinueWithLabelDemo.java uses nested loops to search for a substring within another string. For supporting information see The Java Tutorial: Nuts and Bolts. DoWhileDemo.java shows how to use a do-while statement to continually execute a block of code while a condition remains true. For supporting information see The Java Tutorial: Nuts and Bolts. ForDemo.java uses a for statement to iterate over the elements of an array and print them. For supporting information see The Java Tutorial: Nuts and Bolts. IfElseDemo.java uses an if-else statement to assign a grade based on the value of a test score. For supporting information see The Java Tutorial: Nuts and Bolts. SwitchDemo.java uses the switch statement to conditionally perform statements based on an integer expression. For supporting information see The Java Tutorial: Nuts and Bolts. SwitchDemo2.java illustrates how it can be useful to make a case statement terminate the flow of control. For supporting information see The Java Tutorial: Nuts and Bolts. WhileDemo.java shows how to use a while statement to continually execute a block of code while a condition remains true. For supporting information see The Java Tutorial: Nuts and Bolts. Date & Time June.java demonstrates the limits of scope by finding out which month of the year is June. For supporting information see New to Java Programming Supplement, Feb 2002. TimeTest.java shows you how to create a time stamp object that returns the current time. For supporting information see New to Java Programming Supplement, November 2001. Operators ArithmeticDemo.java shows you how to perform mathematical operations with numbers. For supporting information see The Java Tutorial: Nuts and Bolts. BitwiseDemo.java performs bit manipulation on data by shifting the bits of the first operand either right or left. For supporting information see The Java Tutorial: Nuts and Bolts. RelationalDemo.java defines three integer numbers and uses the relational operators to compare them. For supporting information see The Java Tutorial: Nuts and Bolts. SortDemo.java uses an array to sort numbers from lowest to highest. For supporting information see The Java Tutorial: Nuts and Bolts. Packages TestFileClass.java New to Java Programming Supplement, Feb 2002. Variables BasicsDemo.java adds numbers from 1 - 10 and displays the results. For supporting information see The Java Tutorial: Nuts and Bolts. Cast.java uses the instanceOf method to determine the type of objects in a list and shows how to cast the objects to their correct type before accessing the data. For supporting information see New to Java Programming Supplement, March 2002. MaxVariablesDemo.java shows how to store data in variables. For supporting information see The Java Tutorial: Nuts and Bolts.
arrayCopy
Integer
for
do-while
if-else
switch
case
while
instanceOf
