Use of getChars

getChars:  
getChars is used to select the more than one character using locations

// Program to use of getchars

class getChars
{
public static void main(String arr[])
{
String a="There is Shaminder singh";
int start=6;
int end=14;
char buf[]= new char[end-start];
a.getChars(start,end,buf,0);
System.out.println(buf);
}
}

Java Introduction

Things you need to know about Java

1. Object-Oriented : The first thing that you need to know about Java is that it is an object-oriented programming language. This means that Java allows you to create objects and to work with them. Some of the advantages of object-oriented programming languages are inheritance and encapsulation. Don't worry if you don't understand these terms. You will learn more about them later.

2. Platform-indepedent : Java is a platform-independent programming language unlike C and C++. This means a Java program written in your system that runs on Windows 7 can be executed in another platform (say Mac). This is why people offer refer Java as "Write once, Run Anywhere".

3. Java is secure : Unlike C, Java does not use pointers. It means, Java does not usually deal with memory storage and this is why Java is said to be more secure. Data from one object cannot be accessed by another object without your permission.

4. Java is both compiled and interpreted : Java is first compiled and the source code is converted into Byte-code which is a language that can be understood by a Java Virtual Machine (JVM). Then, JVM interprets the byte-code into the machine language of the computer in which the JVM runs. This is why, Java is referred to be a programming language that is both compiled and interpreted. However, you can compile the byte-code into the machine language using the Just-in-Time compiler, though, it is not the case most of the time.