编写程序创建5个线程，分别显示5个不同的字符串。分别用继承Thread类以及实现Runnable接口的两种方式实现。

classThread1extendsThread{

public voidrun(){

System.out.println("haha");

}

}

classThread2extendsThread{

public voidrun(){

System.out.println("hello");

}

}

classThread3extendsThread{

public voidrun(){

System.out.println("world");

}

}

classThread4extendsThread{

public voidrun(){

System.out.println("java");

}

}

classThread5extendsThread{

public voidrun(){

System.out.println("wow");

}

}

public classwork10{

public static voidmain(String args[]){

Thread1 t1=newThread1();

Thread2 t2=newThread2();

Thread3 t3=newThread3();

Thread4 t4=newThread4();

Thread5 t5=newThread5();

t1.start();

t2.start();

t3.start();

t4.start();

t5.start();

}

}