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CreepyPro

Need help with for-each loops JAVA

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Posted · Original PosterOP

I'm trying to make a toString methodthat returns a string made out of the elements of an arraylist with a for each loop but I'm getting an IndexOutOfBounds and I can't figure out why.

Heres and example of what I want to achieve:

String a = "{";
			for(int i=0;i<list.size();i++) {
				a = a + list.get(i);
				if(i!=list.size()-1)
					a = a + ",";
			}
			return a+"}";

And heres my for-each loop:

String s = "{";
			for(int a: list) { 
				s = s + list.get(a);
				if(a!=list.size())
					s = s + ",";
			}
			return s+"}";

 

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@CreepyPro

 

A for-each loop takes out the interation that you are doing in the original for loop.  So when you say for (int a: list), that means a has the value at the index of the loop.   So you should only need to do s = s + a;  (or s += a; )

 

 

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Posted · Original PosterOP
2 minutes ago, PyroTheWise said:

@CreepyPro

 

A for-each loop takes out the interation that you are doing in the original for loop.  So when you say for (int a: list), that means a has the value at the index of the loop.   So you should only need to do s = s + a;  (or s += a; )

 

 

ohhhh, thanks for your help now it works

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