Java

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public class ChildThread implements Runnable{
    //variable-declaration

    public ChildThread(){
    //initialization
    }
 
    public void run(){
    //some code here;
    }
 
    public void doMethod(){
    //do something
    }
}
 

Now I'm creating multiple ChildThread in AnotherClass
 
public class Parent {
    Thread t;
    //variables
 
    public Parent(){
    //initialization
    }
 
    //statements
 
    private someParentMethod{
        //for some event1
        t=new Thread(new ChildThread(),"name1");
        t.start();
    }
 
    private doSomething(){
        //some event1 for name1
        //want to call doMethod() of ClildThread name1
    }
}

        try {
            (new Thread(new Lettore(port), "Lettore")).start();
        } catch (Exception e) {
            System.err.println("Errore " + e);
        }

    SerialPort port;
 
    public Lettore(SerialPort port) throws IOException {
        this.port = port;
    }
 
    @Override
    public void run() {
        byte[] buffer = new byte[1024];
        int len = -1;
            try {
            while (true) {
                //read, write on terminal, echo.
                len = port.getInputStream().read(buffer);
                System.out.print(new String(buffer, 0, len));
                if (len != 0) {
                    port.getOutputStream().write(buffer, 0, len);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

	public Object mapRow(ResultSet rs, int arg1)
							throws SQLException {
						for(int k=0;k<answers.length;k++){
							DomainForm d = new DomainForm();
							d.setAnswer(rs.getBinaryStream("Answer"));
							InputStream s = (InputStream)d.getAnswer();
							System.out.println("This is S values:"+s);
							answers[k]= s;
							
						}
						
						return null;
					}
 
				});
			}
			try {
 

				Vector v=new Vector();
				for(InputStream is : answers){
					v.add(is);
					System.out.println("ele"+is);
 
				}
				System.out.println("elements"+v.elements());
				Enumeration e=v.elements();
				SequenceInputStream sis = new SequenceInputStream(e);
				byte[] buffer1 = new byte[1024];
				int size1 = 0;
				response.setContentType("application/msword");
 
				while ((size1 = sis.read(buffer1)) > 0) {
					response.getOutputStream().write(buffer1, 0, size1);				
				}
				response.getOutputStream().flush();
				sis.close();
				
			} catch (IOException e) {
				e.printStackTrace();
			}
			return ans;
		}