ContactAuraController.apxc

public class ContactAuraController {
    
    @AuraEnabled
    Public static List<Contact> getContactList(){
        //get all contact list
        List<Contact> conList = [SELECT Id, Name, Account.Name, Phone, Email FROM Contact LIMIT 1];
        return conList;
    }
}

ContactListComponent_cmp.html

<aura:component controller="ContactAuraController" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" >

    <!--Declare Event Handlers--> 
    <aura:handler name="init" action="{!c.doInit}" value="{!this}"/>
     
    <!--Declare Attributes-->
    <aura:attribute name="contactList" type="list" />   
    <aura:attribute name="isSelectAll" type="boolean" default="false"/>
      <aura:attribute name="recdId" type="String" /> 
    <aura:attribute name="previousSelection" type="String" default="" />
    <div class="slds-m-around_xx-large">
        <h1 class="slds-text-heading--medium">Contacts</h1>
        <br/>
        <!--Contact List Table-->
        <table class="slds-table slds-table--bordered slds-table--cell-buffer" role="grid">      
            <thead>  
                <tr class="slds-text-title--caps">
                    <th>           
                         <!--<label class="slds-checkbox">
                           <ui:inputCheckbox value="{!v.isSelectAll}" change="{!c.handleSelectedContacts}" aura:id="selectAll"/>
                            <span class="slds-checkbox__faux" />
                            <span class="slds-form-element__label"></span>
                        </label>-->
                    </th>
                    <th scope="col">
                        <div class="slds-truncate" title="Name">Name</div>
                    </th>
                    <th scope="col">
                        <div class="slds-truncate" title="Account">Account</div>
                    </th>
                     
                    <th scope="col">
                        <div class="slds-truncate" title="Phone">Phone</div>
                    </th>
                     
                    <th scope="col">
                        <div class="slds-truncate" title="Email">Email</div>
                    </th>
                </tr>
            </thead>
            <tbody>        
                <aura:iteration items="{!v.contactList}" var="con">
                    <tr>
                        <th>
                            <label class="slds-checkbox">
                                <ui:inputCheckbox aura:id="checkContact" name="test" value="" text="{!con.Id}" change="{!c.onCheckboxChange}"/>
                                <!--<lightning:input aura:id="{!con.Id}" type="checkbox" label=" " name="{!con.Id}" checked="false" onchange="{!c.onCheckboxChange}"/>-->
                                <span class="slds-checkbox--faux" />
                                <span class="slds-form-element__label"></span>
                            </label>
                        </th>
                        <th scope="row">
                            <div class="slds-truncate" title="{!con.Name}">{!con.Name}</div>
                        </th>
                        <td>
                            <div class="slds-truncate" title="{!con.Account.Name}">{!con.Account.Name}</div>
                        </td>
                        <th scope="row">
                            <div class="slds-truncate" title="{!con.Phone}">{!con.Phone}</div>
                        </th>
                        <td>
                            <div class="slds-truncate" title="{!con.Email}">{!con.Email}</div>
                        </td>
                    </tr>
                </aura:iteration>
            </tbody>
        </table>
        <div>
            <br/>
            <!-- <lightning:button label="Submit" class="slds-button_brand" onclick="{!c.handleSelectedContacts }"  /> -->
        </div>
    </div>
</aura:component>

ContactListComponentController.js

({
    //get Contact List from apex controller
    doInit : function(component, event, helper) {
        var action = component.get("c.getContactList");
        action.setParams({
        });
        action.setCallback(this, function(result){
            var state = result.getState();
            if (component.isValid() && state === "SUCCESS"){
                component.set("v.contactList",result.getReturnValue());   
            }
        });
        $A.enqueueAction(action);
    },
    
    //Select all contacts
    
    
    //Process the selected contacts
    onCheckboxChange : function (component,event,helper){
        //debugger; 
        var checkboxes = component.find('checkContact');
        var value =false;
        if (!Array.isArray(checkboxes)) {
            checkboxes.set('v.value', value);
        } else {
            checkboxes.forEach(function(cb) {
                cb.set('v.value', value);
            });
        }
        event.getSource().set("v.value",true);
        //text attribute of the checbox contains the value of contact Id
        var contactId = event.getSource().get("v.text");
        console.log("ContactId"+contactId);
        //sets the value to recordId attribute defined in the component view part
        component.set("v.recdId",contactId);
        console.log("record Id", component.get("v.recdId"));
    },
    
    
    getSelectedName: function (cmp, event,helper) {
        debugger; 
        var selectedRows = event.getParam('selectedRows'); 
        
        
        for (var i = 0; i < selectedRows.length; i++){
            // alert(selectedRows[i].Id);
            cmp.set('v.recdId', selectedRows[i].Id); 
            
            var RecordID = cmp.get("v.recdId");
            alert('RecordID'+RecordID);
            
        }
    },
    closeCreationWindow : function (component,event,helper) {
        console.log("Button clicked");
    }
    
    
})