How to return array in java method

Java method returns an array: Add int[] before the method to return a one-dimensional integer array. If you add int[][] before the method, you can return a two-dimensional integer array.

Java is an object-oriented programming language that not only absorbs the various advantages of the C language, but also abandons the incomprehensible multiple inheritance in C , pointers and other concepts, so the Java language has two characteristics: powerful and simple to use. As a representative of static object-oriented programming languages, Java language perfectly implements object-oriented theory and allows programmers to perform complex programming with an elegant way of thinking.

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Java methods that return arrays

#If the method returns an integer, you must add the int keyword in front of the method when declaring it. On the contrary, if a one-dimensional integer array is returned, int[] must be added in front of the method. If a two-dimensional integer array is returned, add int[][], and so on.

public class JavaTest1
{
public static void main(String[] agrs)
{
int a[][]={{2,1,3,6,9},{27,18,34}};
int b[][];
System.out.println("The array a is");
showArray(a);
b=addArray(a);
System.out.println("The array b is");
showArray(b);
}
public static int[][] addArray(int[][] a)
{
for(int i=0;i<a.length;i++)
{
for(int j=0;j<a[i].length;j++)
{
a[i][j]++;
}
}
return a;
}
public static void showArray(int[][] a)
{
for(int i=0;i<a.length;i++)
{
for(int j=0;j<a[i].length;j++)
{
System.out.print(" "+a[i][j]);
}
System.out.println("");
}
}
}

Result:

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