How to Print an Array in Java

If you are working on Java and have an array with a large amount of data, you may want to print certain elements in order to view them conveniently. There are multiple ways you can print arrays in Java and the examples given below will...

Table of Contents

Using the toString Command
Using the asList Command
Printing Multidimensional Arrays

Method 1 of 3:

Using the toString Command

Setting the elements in your array. Enter String[] array = new String[] {"Elem1", "Elem2", "Elem3"} where "ElemX" are the individual elements in your array.
Use the standard library static method: Arrays.toString(array). This will give you a string representation of one dimensional arrays. In other words, because it is one dimensional, you can present the data in either rows or columns. This method will print the data in a row, or string.^{[1] X Research source}
Run the program. Different compilers have different ways to accomplish this task. You may be able to go to "File" and then "Run." You may also have the option to simply click the "Run" icon in your toolbar. Your elements will be printed out in a string in the lower window of Java.

Method 2 of 3:

Using the asList Command

Setting the elements in your array. Enter String[] array = new String[] {"Elem1", "Elem2", "Elem3"} where "ElemX" are the individual elements you want in your array.
Use the standard library static method: Arrays.asList() for one dimensional arrays that you want to print as a list.
Run the program. Different compilers have different ways to accomplish this task. You may be able to go to "File" and then "Run." You may also have the option to simply click the "Run" icon in your toolbar. Your elements will be printed out in a list or column in the lower window of Java.

Method 3 of 3:

Printing Multidimensional Arrays

Setting the elements in your array. For a two-dimensional array, you will have both rows and columns that need to be printed out. Enter for ( i = 0; i < rows; i++) for the rows and for ( j = 0; j < columns; j++) for the columns.
Use the standard library static method: System.out.print(aryNumbers[i][j] + " " ); followed by System.out.println( "" ); to print arrays within arrays and multidimensional arrays as a line.^{[2] X Research source}
Run the program. Different compilers have different ways to accomplish this task. You may be able to go to "File" and then "Run." You may also have the option to simply click the "Run" icon in your toolbar. Your elements will be printed out in a line or column in the lower window of Java.

Kareem Winters

Update 05 March 2020

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