Why my array is printed 5 times?

Quote:

but I wonder actual problem.

I made some changes to your code, run it and you will see what is going on:

package test;
import java.lang.* ;



public class bubbleSort {
	
	static void printArr(int[] arr) {
		for(int k=0;k<arr.length;k++) {//print arr
			System.out.print(arr[k] +" ");
			
		}
		
		
	}
	
	 static void check(int[] arr) {
		System.out.print("Start check");
		for(int j=0;j<arr.length-1;j++) {
		
			if(arr[j]<arr[j+1] || arr[j]==arr[j+1]) {
				if(j+1==arr.length-1) {//if last two elements are sorted too,print arr
					printArr(arr);
					
				}
			}
			else {
				sort(arr);//if it is not sorted,send to sort method again.
			}
			
		}
			
		
		System.out.print("Exit check");
	}
	
	 static void sort(int[] arr) {
		System.out.print("Start sort");
		int temp;
		for(int i=0;i<arr.length-1;i++) {
			
			if(arr[i]>arr[i+1]) {//swap
				temp=arr[i];
				arr[i]=arr[i+1];
				arr[i+1]=temp;
			}
		}
		check(arr);
		System.out.print("Exit sort");
	}

	public static void main(String[] args) {
		
		
		int arr[]= {64, 34, 25, 12, 22, 11, 90,86} ;
		sort(arr);

	}

}

Your code is recursive: sort calls check which calls sort.

Your code do not behave the way you expect, or you don't understand why !

There is an almost universal solution: Run your code on debugger step by step, inspect variables.
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't know what your code is supposed to do, it don't find bugs, it just help you to by showing you what is going on. When the code don't do what is expected, you are close to a bug.
To see what your code is doing: Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.

Debugger - Wikipedia, the free encyclopedia[^]

Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
Basic Debugging with Visual Studio 2010 - YouTube[^]

jdb - The Java Debugger[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]

The debugger is here to only show you what your code is doing and your task is to compare with what it should do.