在Java中打印2D数组元素

Question

I'm trying to print out elements in a 2d array, but can't seem to format it. Anytime I try to format it I get an error

    String [][] plants = new String[2][2];
    plants[0][0] = "Rose";
    plants[0][1] = "Red";
    plants[1][0] = "Snowdrop";
    plants[1][1] = "White";

    //String plant;
    //String color;
    for (int i = 0; i<2; i++){
    for (int j = 0; j<2; j++){

        //plant = Arrays.toString(plants[i]);
        //color = Arrays.deepToString(plants[j]);
        //System.out.println(plant + " " + color);
        System.out.println(plants[i][j]);

    }
    }

What I have so far prints out each element on an individual line, but I want it to print out like:

Rose Red

Snowdrop White

I've tried the methods commented out, but they won't work right either.

Any suggestions? Thanks

Answer 1

In the inner loop do System.out.print(plants[i][j] + " ");

In the outer loop do System.out.println();

Answer 2

Your for-loop should look like this:

for(int i = 0; i < plants.length; i++)
{
    for(int j = 0; j < plants[i].length; j++)
    {
        System.out.print(plants[i][j]);
        if(j < plants[i].length - 1) System.out.print(" ");
    }
    System.out.println();
}

Answer 3

for (int i = 0; i<2; i++){
    for (int j = 0; j<2; j++){

        System.out.print(plants[i][j]);

    }
     System.out.println();
}

However you are better off using for each to iterate over the array.

Answer 4

for (int i = 0; i<2; i++){
    System.out.println(plants[i][0] + " " + plants[i][1]);
}

Answer 5

Try this:

 for (int i = 0; i<2; i++){  

        System.out.println(plants[i][0] + " " + plants[i][1]);

    }

Answer 6

You need only one loop:

for (int i = 0; i<2; i++)
{
    System.out.println(plants[i][0] + ' ' + plants[i][1]);
}

Answer 7

The main problem is with the System.out.println(plants[i][j]);
After printing a String "Rose" it will automatically go to next Line....
you can use simple print in inside block instead of println which would keep cursor in same line instead of going to next Line...

for(int i=0;i<2;i++)
{
    for(int j=0;j<2;j++)
    { 
        System.out.print(plants[i][j]);    
    }  
    System.out.println();  
}

Answer 8

for (int i = 0; i<2; i++) {
    System.out.println(plants[i][0] + " " + plants[i][1]);
}

Answer 9

In the inner loop you should use

System.out.print(plants[i][j]);

And in the outer loop you should use System.out.println();