Question

public class Player {

  private String name;
  private int health;
  
  public Player(String name) {
    this.name = name;
  }

}

Write a complete method using java to find a Player by name in an array of Player objects. Use a linear search algorithm. The method should either return the first Player object with the requested name, or null if no player with that name is found.

Answer 1

//PLease find below the java code for the above statement

import java.io.*;
import java.util.Scanner;

public class Player {

private String name;
private int health;
  
public Player(String name) {
this.name = name;
}
  
//function to obtain player name of an object
public String getPlayerName(){
return name;
}
}

//The Driver class having searchPlayer and main functions
class Driver {
  
//the function to search for player names in array of objects
static Player searchPlayer(Player []players, String name){
  
//looping through all objects and comparing the names by linear search
for(int i=0;i<players.length;i++){
  
if(name.equals(players[i].getPlayerName())){
return players[i];
}
  
}
  
//if object not found
return null;
}
  
//main function to test the functions
   public static void main (String[] args) {
      
       Player[] players=new Player[3]; // Creating array of objects
      
       //initializing some values
       players[0]=new Player("John");
       players[1]=new Player("Andy");
       players[2]=new Player("Smith");
  
//taking input
Scanner in=new Scanner(System.in);
String name=in.nextLine();
  
//Obtaining the Output
Player output1=searchPlayer(players,name);
  
//checking for null values
if(output1==null){
System.out.println(name+" Object not found: returned NULL");
}
else{
System.out.println(name+" PLayer name Object found. Output of getPlayerName: "+output1.getPlayerName());
}
   }
}

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INPUT1:

Output 1:

INput 2:

Output 2: