Hello Everyone,
I wanted to know the difference between StringBuilder & StringBuffer classes and thier practical use. So,I wrote 2 code snippets in which I spawn 3 threads simultaneously which make use of StringBuilder & StringBuffer objects. When I run the code, i expect all the 3 threads to run simultaneously in case of StringBuilder & in synchronized manner in case of StringBuffer. But in BOTH the cases, they run in synchronized manner. then what is the use of StringBuffer class?
(In case of String objects, all the 3 threads run simultaneeously). I will share the code snippets for your reference. Please also correct me if I'm wrong in understanding the concept of multi-threading itself. And please, also correct the code.
Thanks In Advance!
// StringBuilder...
public class MultiTread implements Runnable{
private StringBuilder name;
public MultiTread(StringBuilder string){
name=string;
}
public void run(){
for(int i=0; i<=10; i++){
System.out.println(name.append(i));
}
}
public static void main(String[] args){
Thread th = new Thread(new MultiTread(new StringBuilder("thread1:")));
Thread th1 = new Thread(new MultiTread(new StringBuilder("thread2:")));
Thread th2 = new Thread(new MultiTread(new StringBuilder("thread3:")));
th.start();
th1.start();
th2.start();
}
}
..................
//StringBuffer...
public class MultiTreadBuf implements Runnable{
private StringBuffer name;
public MultiTreadBuf(StringBuffer string){
name=string;
}
public void run(){
for(int i=0; i<=10; i++){
System.out.println(name.append(i));
}
}
public static void main(String[] args){
Thread th = new Thread(new MultiTreadBuf(new StringBuffer("thread1:")));
Thread th1 = new Thread(new MultiTreadBuf(new StringBuffer("thread2:")));
Thread th2 = new Thread(new MultiTreadBuf(new StringBuffer("thread3:")));
th.start();
th1.start();
th2.start();
}
}
........
//String....
public class MuiltiTreadStr implements Runnable{
private String name;
public MuiltiTreadStr(String string){
name=string;
}
public void run(){
for(int i=0; i<=10; i++){
System.out.println(name+i);
}
}
public static void main(String[] args){
System.out.println("main begins...");
Thread th = new Thread(new MuiltiTreadStr("thread1:"));
Thread th1 = new Thread(new MuiltiTreadStr("thread2:"));
Thread th2 = new Thread(new MuiltiTreadStr("thread3:"));
System.out.println("spawning 3 threads...");
th.start();
th1.start();
th2.start();
System.out.println("main ends...");
}
}
Linear Mode
