Console.readInt（）JAVA编程 [英] Console.readInt() JAVA Programming

问题描述

可以任何人告诉我这个代码是什么错误，为什么Eclipse说方法readInt（String）未定义为类型控制台？
提前谢谢！

can anyone of you tell me what is wrong with this code and why Eclipse says "The method readInt(String) is undefined for the type Console"? Thank you in advance!

    import java.io.*;

    public class Matrix {

        private int [] [] matrice; 

        /* Metodo Costruttore */
        Matrix(int i, int j) {
            matrice = new int [i] [j];
        }

        /* reads matrix */
        public void leggiMatrix (int ni, int nj) {
            int i, j;

            for (i=0; i<ni; i++ )
                for (j=0; j<nj; j++)
                    matrice [i] [j] = Console.readInt("Inserire elemento " + i    + ", " + j + " : ");
        }

        /* prints matrix */
        public void stampaMatrix(int ni, int nj) {
            int i, j;

            for (i=0; i<ni; i++) {
                for (j=0; j<nj; j++) {
                    System.out.print(matrice[i][j] + " ");
                    System.out.println();
                }
            }
        }` 

UPDATE

        /* reads matrix */
        public void leggiMatrix (int ni, int nj) {
            int i, j;

            for (i=0; i<ni; i++ )
                for (j=0; j<nj; j++)
                    matrice [i] [j] = Integer.parseInt(Console.readline("Inserire elemento " + i + ", " + j + " : "));
        }

现在我得到了在控制台类型中的方法readLine适用于参数（String）

now I get "The Method readLine(Boolean) in the type Console is not applicable for the arguments (String)"

推荐答案

这是因为 readInt 不是控制台的功能。你正在寻找的是：

This is because readInt isn't a function of Console. What you are looking for is:

//Read input from console
String input = System.console.readLine()

//Convert string to integer
Integer.parseInt(input)

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