import java.util.Scanner;
public class Matrix{
private int rowNumber;
private int colNumber;
private int val;
int [][] matrix;
public Matrix(){
rowNumber = 0;
colNumber = 0;
}
public Matrix(int row, int col){
rowNumber = row;
colNumber = col;
Matrix obj = new Matrix();
matrix = new int [rowNumber][colNumber];
Scanner input = new Scanner(System.in);
for (int i = 0; i < rowNumber; i++) {
for (int j = 0; j < colNumber; j++) {
System.out.println("Enter A" + (i+1) +""+ (j+1) + " : ");
matrix [i][j] = input.nextInt();
int val = matrix[i][j];
obj.setElement(rowNumber,colNumber,val);
}
}
obj.display();
}
public void setElement(int r, int c, int value){
matrix = new int [rowNumber][colNumber];
matrix[r][c] = value;
}
public int getElement(int r, int c){
matrix = new int [rowNumber][colNumber];
return matrix[r][c];
}
public void display(){
Matrix ex = new Matrix();
String str = "|\t";
for(int i=0; i<rowNumber; i++){
for(int j=0; j<colNumber ;j++){
**str += ex.getElement(i,j) + "\t";**
}
System.out.println(str + "|");
str = "|\t";
}
}
public static void main (String[] args) {
int rowNumber;
int colNumber;
Scanner input = new Scanner(System.in);
System.out.println("Enter number of rows: ");
rowNumber = input.nextInt();
System.out.println ("Enter number of columns: ");
colNumber = input.nextInt();
Matrix obj1 = new Matrix(rowNumber,colNumber);
}
}
我无法显示所需的矩阵。get 和 set 方法有问题。程序将值输入到数组中,并且该值存储在变量中。然后将该变量作为参数传递给 set 方法 setmethod 获取值并将其放入具有 r 行和 c 列的数组中,所有值都存储在一个数组中,然后在使用的构造函数中调用 display 方法get 方法来获取值。