This Java Tutorial is complete coverage of Java Basics Tutorial , Java String Tutorial, Java Array Tutorial , Java Swing Tutorial , and Java Applet. Tutorial . . .
Case Conversions As the Java language is case sensitive, it differentiates uppercase letters from lowercase letters. The String class provides two methods, namely toLowerCase( ) and toUpperCase( ) to facilitate case conversions. While the toLowerCase( ) method converts all the letters of the given string to lower case, the toUpperCase( ) method does just the … Read more…
String Comparison We use the == operator for comparing the values of two variables or expressions of any data type, such as int, float, double, char and boolean. But we have to use the equals( ) method of the String class for comparing two strings. This method is used to find the contents are same, … Read more…
String Concatenation Java defines one operator for string object such as “+”, it is used to concatenate two string. For example, in the following program, the value of the variable ‘date’,’month’ and ‘year’ is being converted to a string that represents this value as a decimal digit character. This is prompted by the fact that it … Read more…
Get Length The String class defines a number of methods that allow us to accomplish a variety of string manipulation tasks. The number of characters in a string provided by the length( ) method of the String class. Since it is an instantiated method, we have to invoke it from an object of the String … Read more…
String A string is a sequence of characters. In Java, string is the most important data type. A string is enclosed in quotation marks, as in the case of the example “KrugerPark”. But the quotation marks are not themselves part of the string. The string are useful in representing various types of non-numeric data, such … Read more…
Returning Arrays From Method A method may also return an array. For example, in the following program, the method returnData( ) returns an array. Program Program Source class Data { int[] returnData() { return new int[]{20,40,60,80}; } } public class Javaapp { public static void main(String[] args) { Data da = new Data(); int[] getData = da.returnData(); for(int … Read more…