Thread: Breaking If/Else Statements

I want to know if it is possible to break out of an If/Else statement that is inside a loop. For example, you enter the Else Statement, do some more stuff, and under a condition that was determined inside the Else Statement, stop running the If/Else statement, and continue with the rest of the loop. Currently, the only way I can figure out how to do it is by using a boolean, setting the boolean under conditions, and checking the boolean's value before continuing with the Else Statement.

I'm not sure if I'm explaining it correctly.

How about 'continue':

 
for ( int i = 0; i < 100; i++ ){
    if ( i % 2 == 0 ){
        continue;
    }
    System.out.println(i);
}

Will print all odd numbers between 1 and 100

Ok, this is really killing me now.

In the following code, I have placed a comment where I want to skip the rest of the loop steps if a condition is met.

for(int x=0;x<workBook.getLastRow()+1;x++)
	    			{
	    				String currName = workBook.getText(r+x,0);
	    				if(contains(list,currName))
	    				{
		    				if(!currName.equals(""))
		    				{
		    					String currType = workBook.getText(r+x,1);
			    				if(!list.get(x/4).Name.equals(currName))
			    				{
			    					//INSERT SOMETHING HERE TO CHECK IF NAME IS IN ARRAYLIST. IF NOT, SKIP REST OF LOOP AND START AT BEGINNING WITH NEXT VALUE. IF YES, CONTINUE WITH REST OF LOOP AND CONDITIONS
			    					workBook.insertRange(r+x,workBook.getLastCol()+1,r+x+3,workBook.getLastCol()+1,WorkBook.ShiftRows);
			    					workBook.setText(r+x,0,list.get(x/4).Name);
			    					workBook.setText(r+x,1,"Flights per Week");
			    					workBook.setText(r+x+1,0,list.get(x/4).Name);
			    					workBook.setText(r+x+1,1,"Seats per Week");
			    					workBook.setText(r+x+2,0,list.get(x/4).Name);
			    					workBook.setText(r+x+2,1,"ASMs per Week");
			    					currName = workBook.getText(r+x,0);
			    					currType = workBook.getText(r+x,1);
			    				}
			    				MarketData market = list.get(x/4);
			    				System.out.println("Loop Check");
								ArrayList arr = market.getArray(currType);
								for(int y=0;y<arr.size();y++)
								{
									workBook.setNumber(r+x,c+y,Long.parseLong(arr.get(y).toString()));
								}
		    				}
	    				}
	    			}

Basically, I need to check to see if the name that I read in is even in the ArrayList. If it isnt in the ArrayList, that is an indicator that it will never pass that name and continue with the rest of the data, and end up messing up the output. So, I want to ignore that name and move on. If it is in the ArrayList, it means I havent reached the data for that name yet, and I need to insert a new set of data in its alphabetical order.

Do you understand what I'm trying to say?

IF NOT, SKIP REST OF LOOP AND START AT BEGINNING

That sounds like what a "continue" would do.

As I mentioned above, what is wrong with using continue?

for(int x=0;x<workBook.getLastRow()+1;x++)
	    			{
	    				String currName = workBook.getText(r+x,0);
	    				if(contains(list,currName))
	    				{
		    				if(!currName.equals(""))
		    				{
		    					String currType = workBook.getText(r+x,1);
			    				if(!list.get(x/4).Name.equals(currName))
			    				{
			    					if (NOTINLIST){
			    					    continue;
			    					}
			    					workBook.insertRange(r+x,workBook.getLastCol()+1,r+x+3,workBook.getLastCol()+1,WorkBook.ShiftRows);
			    					workBook.setText(r+x,0,list.get(x/4).Name);
			    					workBook.setText(r+x,1,"Flights per Week");
			    					workBook.setText(r+x+1,0,list.get(x/4).Name);
			    					workBook.setText(r+x+1,1,"Seats per Week");
			    					workBook.setText(r+x+2,0,list.get(x/4).Name);
			    					workBook.setText(r+x+2,1,"ASMs per Week");
			    					currName = workBook.getText(r+x,0);
			    					currType = workBook.getText(r+x,1);
			    				}
			    				MarketData market = list.get(x/4);
			    				System.out.println("Loop Check");
								ArrayList arr = market.getArray(currType);
								for(int y=0;y<arr.size();y++)
								{
									workBook.setNumber(r+x,c+y,Long.parseLong(arr.get(y).toString()));
								}
		    				}
	    				}
	    			}

You could also label the loop

OUTER: for ...
    if ( not in list){
        continue OUTER;
   }

Which is useful for nested loops

I tried this:

boolean checkIfIn = false;
			    				for(int y=0;y<list.size();y++)
			    				{
			    					if(list.get(y).Name.equals(currName))
			    					{
			    						checkIfIn = true;
			    						break;
			    					}
			    				}
			    				if(!checkIfIn)
			    					continue mainArr;

But it hasnt made a difference. I think my logic might be flawed.

Why not continue from where you detected the condition? vs setting a flag, break and then continue?

I cant directly see the condition at any one point. I need to search the entire ArrayList to see if the String currName value is the Name variable of any of the objects in the list ArrayList. So as far as I know, that means I cant use the contains method in the ArrayList class, which means I have to go through the entire ArrayList and see if any of the object's Name variable is the same as currName. I dont know how to detect a NOT Condition for an entire arraylist without search each object.