how to apply hamming window to sinal

hello, i am new in matlab. i have created the modulated signal but don't know how to apply the hamming window to the signal.

    clc
clear all
close all
%%Details
Ac = 5;                         % carrier amplitude
fc = 10000;                     % carrier frequency
Am = 1;                         % modulating signal amplitude
fm = 1000;                      % modulating signal frequency
Tc = 1 / fc;                    % carrier period
Ts = Tc / 100;                  % sample interval  
Pm = 1 / fm;                    % signal period  
t = 0 : Ts : 5*Pm;              % 5 cycles
Vm = Am*cos(2*pi*fm*t);         % message signal
Vc = Ac*sin(2*pi*fc*t);         % carrier signal
Vam = (Ac+Vm).*sin(2*pi*fc*t);  % amplitude modulated signal
%%Plot three signals
figure(1)
    subplot(311)
    plot(t,Vm);
    title('Message signal');
    xlabel('Time(s)');
    ylabel('Amplitude(V)');
    grid
    subplot(312)
    plot(t,Vc);
    title('Carrier singal');
    xlabel('Time(s)');
    ylabel('Amplitude(V)');
    grid
    subplot(313)
    plot(t,Vam);
    title('Amplitude Modulated Signal');
    xlabel('Time(s)');
    ylabel('Amplitude(V)');
    grid 
%%Plot spectrum of AM signal
L=10^24;                         % number of samples 
k=0:L-1;  
f=k./(L*Ts);                    % frequency in Hz
Xam=(2/L)*abs(fft(Vam,L)); 
figure(2)
    plot(f, Xam)
    title('Spectrum of modulated signal')
    xlabel('Frequency(Hz)')
    ylabel('Magnitude')
    grid on
%%window function

Answer 1

[dpb]

...
Vam = (Ac+Vm).*sin(2*pi*fc*t);  % amplitude modulated signal
VamWindowed=Vam.*hamming(length(t),'periodic');

doc hamming

for (a little) more detail