Java bit operands or: https://es.stackoverflow.com/a/81932/29967 , Java

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class Rextester
{  
    private static int i;
    private static int j;
    private static int k;

public  static void main(String args[])
    {
         i=7;
         j=5;
         k=i|j;

printResult(i,j,k);
         System.out.println("--------------------------------------------------------------------");       
 
         i=141;
         j=154;
         k=i|j;

printResult(i,j,k);

System.out.println("--------------------------------------------------------------------");       
 
         i=788;
         j=657;
         k=i|j;

printResult(i,j,k);        
        
         System.out.println("--------------------------------------------------------------------");       
 
         i=10000;
         j=12000;
         k=i|j;

printResult(i,j,k);

}

private static  void printResult(int i, int j, int k)
        {
            	System.out.println("Variable i\tDecimal:\t"+i + "\tBinario:\t" + Integer.toBinaryString(i));
            	System.out.println("Variable j\tDecimal:\t"+j + "\tBinario:\t" + Integer.toBinaryString(j));
            	System.out.println("i | j = k \tDecimal:\t"+k + "\tBinario:\t" + Integer.toBinaryString(k));
        }
        
}

[ + ] Show input
Compilation time: 0.93 sec, absolute running time: 0.15 sec, cpu time: 0.09 sec, memory peak: 18 Mb, absolute service time: 1,09 sec