Error searching/searching for attribute in a vector

Question

In this program with you insert the object peacefully in my vector with the method (Adder), but after I cannot fetch the string "plate" that the user typed... program always shows "Vehicle not found in the system!".

Note: the problem is in the method (Archer).

Class: Lessor

import javax.swing.*;
public class Locadora{
    public static TCarro[] vetor=new TCarro[50];
    public static void main(String[]args){
        for(int i=0;i<vetor.length;i++){
            vetor[i]=new TCarro();
        }
        menu();
    }
    public static void menu(){
        switch(Integer.parseInt(JOptionPane.showInputDialog("#MENU\n1.INCLUIR\n2.PESQUISAR\n"))){
            case 1:
                adder();
            case 2:
                searcher();
            default:
                break;
        }
        menu();
    }
    public static void adder(){
        for(int i=0;i<vetor.length;i++){
            vetor[i].setPlaca(JOptionPane.showInputDialog("Insira a placa:"));
            vetor[i].setCnh(Integer.parseInt(JOptionPane.showInputDialog("Insira a CNH:")));
            vetor[i].setMarca(JOptionPane.showInputDialog("Insira a marca:"));
            vetor[i].setModelo(JOptionPane.showInputDialog("Insira o modelo:"));
            vetor[i].setLocal(JOptionPane.showInputDialog("Insira locatario:"));
            vetor[i].setSit("DISPONIVEL");
            switch(Integer.parseInt(JOptionPane.showInputDialog("#DESEJA ADICIONAR MAIS?\n1.SIM\n2.NAO\n"))){
                case 2:
                    menu();
                default:
                    break;
            }
        }
    }
    public static void searcher(){
        String placa=JOptionPane.showInputDialog("Insira a placa:");
        for(int i=0;i<vetor.length;i++){
            if(placa.equals(vetor[i].getPlaca())){
                JOptionPane.showMessageDialog(null,"#DETALHES DO CARRO"+
                                            "\nPLACA:"+vetor[i].getPlaca()+
                                            "\nCNH:"+vetor[i].getCnh()+
                                            "\nMARCA:"+vetor[i].getMarca()+
                                            "\nMODELO:"+vetor[i].getModelo()+
                                            "\nLOCATARIO:"+vetor[i].getLocal()+
                                            "\nSITUACAO:"+vetor[i].getSit()+"\n");
            }
        }
        JOptionPane.showMessageDialog(null,"Veiculo não encontrado no sistema!\n");
    }
}

Class: Tcarro

public class TCarro{
    String placa;
    int CNH;
    String marca;
    String modelo;
    String locatario;
    String situacao;

    public void setPlaca(String placa){
        placa=this.placa;
    }
    public String getPlaca(){
        return placa;
    }
    public void setCnh(int CNH){
        CNH=this.CNH;
    }
    public int getCnh(){
        return CNH;
    }
    public void setMarca(String marca){
        marca=this.marca;
    }
    public String getMarca(){
        return marca;
    }
    public void setModelo(String modelo){
        modelo=this.modelo;
    }
    public String getModelo(){
        return modelo;
    }
    public void setLocal(String local){
        locatario=local;
    }
    public String getLocal(){
        return locatario;
    }
    public void setSit(String sit){
        situacao=sit;
    }
    public String getSit(){
        return situacao;
    }
}

Answer 1

The setters of your Tcarro class are wrong. You do so plate=this.plate, it should be so this.plate = plate. The other setters should be corrected as well. The Tcarro class should look as follows:

public class TCarro {
String placa;
int CNH;
String marca;
String modelo;
String locatario;
String situacao;

public void setPlaca(String placa){
    this.placa = placa;
}
public String getPlaca(){
    return placa;
}
public void setCnh(int CNH){
    this.CNH = CNH;
}
public int getCnh(){
    return CNH;
}
public void setMarca(String marca){
    this.marca = marca;
}
public String getMarca(){
    return marca;
}
public void setModelo(String modelo){
    this.modelo = modelo;
}
public String getModelo(){
    return modelo;
}
public void setLocal(String local){
    locatario=local;
}
public String getLocal(){
    return locatario;
}
public void setSit(String sit){
    situacao=sit;
}
public String getSit(){
    return situacao;
}

}

Answer 2

As quoted in the previous answer, the resolution was in its getters and setters, and to no longer have this problem, there is an easy way to solve.

Using Eclipse, when right-clicking on your class, you will have the option "Generate Getters and Setters..." and Eclipse will create all methods automatically.

If you are using Netbeans, pressing Alt+Insert will open a "Generate" tab and one of the options will be the Getters and Setters. To make your class better organized, the two IDE’s do it for you.