我有一个类型为CorporateClient类型的对象的矩阵，并且必须在方法displayMatrix（）中打印该矩阵的文本内容。我不明白我该怎么做，应该怎么做。矩阵的文字内容是什么意思？我是否需要为矩阵中的每个对象重写toString（）方法，并在遍历矩阵时调用它，或者是否有其他打印方法？
我没有做任何尝试，因为不确定我的假设是否正确，或者是否有更好的方法来打印矩阵的文本内容。
private Object[][] matrix;
private List<CorporateClient> listClients;
private Stream<CorporateClient> streamClients;
private Predicate<CorporateClient> predicate;
private MyR[] threadsArrayWorkerTasks;
public List<CorporateClient> getListClients() {
return listClients;
}
public void setListClients(List<CorporateClient> listClients) {
this.listClients = listClients;
}
public Stream<CorporateClient> getStreamClients() {
return streamClients;
}
public void setStreamClients(Stream<CorporateClient> streamClients) {
this.streamClients = streamClients;
}
public Predicate<CorporateClient> getPredicate() {
return predicate;
}
public void setPredicate(Predicate<CorporateClient> predicate) {
this.predicate = predicate;
}
public MyR[] getThreadsArrayWorkerTasks()
{
MyR[] copiere=new MyR[threadsArrayWorkerTasks.length];//creeam o variabila in care vom copia vectorul,element cu element, si ii dam dimensiunea vectorului pe care-l copiem
for(int i=0;i<threadsArrayWorkerTasks.length;i++)
{
copiere[i]=threadsArrayWorkerTasks[i];
}
return copiere;
}
public void setThreadsArrayWorkerTasks(MyR[] _threadsArrayWorkerTasks)
{
threadsArrayWorkerTasks=new MyR[_threadsArrayWorkerTasks.length];
for(int i=0;i<_threadsArrayWorkerTasks.length;i++)
{
threadsArrayWorkerTasks[i]=_threadsArrayWorkerTasks[i];
}
}
// Metoda set pentru campul matrix (public void setMatrix(Object[][] matrixInstance) throws Exception)
// * seteaza campul marix cu o clona profunda (deep clone) a parametrului matrixInstance
// * prin aplicarea medodei clone fiecarui obiect din matrixInstance
// * (se aplica cast-ul la clasa CorporateClient pentru fiecare obiect)
// *
public void setMatrix(Object[][] matrixInstance)throws Exception
{
matrix=new Object[matrixInstance.length][matrixInstance[0].length];
for(int i=0;i<matrixInstance.length;i++)
{
for(int j=0;j<matrixInstance[0].length;j++)
{
CorporateClient auxiliar=(CorporateClient)matrixInstance[i][j];
//un obiect de tip Object nu poate apela clone(),deoarece nu o vede.asa ca va trebui sa convertim matrixInstance la clasa corpclient, deoarece
//matrixInstance nu este de tip obiect,matrix este de tip obiect, deci nu poate apela metoda clone(),de asta nu avem nevoie sa o convertim
//Object nu implementeaza cloneable
matrix[i][j]=(CorporateClient)auxiliar.clone();
}
}
}
public Object[][] getmatrix()
{
Object[][] creare=new Object[matrix.length][matrix[0].length];
for(int i=0;i<matrix.length;i++)
{
for(int j=0;j<matrix[0].length;j++)
{
// creare[i][j]=matrix[i][j];//se face copie la referinta aici , nu la obiect, prin urmare nu e bine scris asa
CorporateClient auxiliare=(CorporateClient)matrix[i][j];
try {
creare[i][j]=(CorporateClient)auxiliare.clone();//auxiliare e un container de obiecte, nu e o matrice!!!!!!!!!!!!!!!!!!!!
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
}
}
return creare;
}
//Create the method displayMatrix() -> void that is displaying on screen the textual content of the matrix ;
public void displayMatrix()
{
}
矩阵内部对象类的代码是：
public class CorporateClient extends Client implements Cloneable , Comparable<CorporateClient> {
private int nbOfEmployees;
private static final long serialVersionUID=1;
public CorporateClient(int clientId, String name, int vatCode, float ammountOnLastInvoice, int nbOfEmployees) throws Exception {
super(clientId, name, vatCode, ammountOnLastInvoice);
if(ammountOnLastInvoice<0) {
throw new Exception("Numarul este negativ!");
}else if(nbOfEmployees<0) {
throw new Exception("Numarul este negativ!");
}else {
this.nbOfEmployees=nbOfEmployees;
}
}
public int getNbOfEmployees() {
return nbOfEmployees;
}
public void setNbOfEmployees(int nbOfEmployees)throws Exception {
if(nbOfEmployees<0)
{
throw new Exception("Numarul de angajati nu poate fii mai mic decat 0!");
}
this.nbOfEmployees = nbOfEmployees;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
@Override
public String getAbstractClientId() {
String rezultat=this.getAbstractClientId()+"-"+this.getNbOfEmployees();
return rezultat;
}
@Override
public boolean equals(Object obj) {
CorporateClient obiect=(CorporateClient)obj;
if(obj instanceof CorporateClient) {
if(obiect.getClientId()==this.getClientId() && obiect.getName()==this.getName() && obiect.getVatCode()== this.getVatCode() && obiect.getAmmountOnLastInvoice() ==this.getAmmountOnLastInvoice() && obiect.getNbOfEmployees()==this.getNbOfEmployees()) {
return true;
}else {
return false;
}
}else {
return false;
}
}
@Override
public Object clone() throws CloneNotSupportedException {
CorporateClient client= (CorporateClient)super.clone();
client.nbOfEmployees=nbOfEmployees;
return client;
}
@Override
public int compareTo(CorporateClient o) {
int test=0;
if(this.nbOfEmployees==o.nbOfEmployees) {
test=0;
}else if(this.nbOfEmployees<o.nbOfEmployees) {
test=1;
}else {
test=-1;
}
return test;
}
//* Supra-scrieti si implementati metoda getAbstractClientId() ce returneaza un obiect de tip String
//* ce reprezinta concatenarea valoarea mostenita pentru clientId caracterul "-" si valoarea capului nbOfEmployees
@Override
public String toString() {
return this.getClientId() +"Id-ul clientului este: "+ this.getName()+" ,numele clientului este: "+ this.getVatCode()+ " ,codul de tva este: "+ this.getAmmountOnLastInvoice()+" ,ultima suma facturata este: "+ this.getNbOfEmployees()+" ,numarul de angajati: ";
}
}
矩阵的文本内容应显示在屏幕上。