Tag: code

How to split String in words and populate an array

Here a simply method to split a string in words and generate an array.
In this case I use a Length param to limit substring size.

 

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public static String[] splitStringInWordsAndCreateArrayWithLineInSize(String input,Integer lineLength){
        String[] words = input.split(" ");
        List<String> list = new ArrayList<String>();
        StringBuilder line = new StringBuilder();
        for (int x = 0; x < words.length; x++) {
             
             
            Boolean c = ((line.toString()+words[x]+" ").length()<lineLength);
            if(c){
                line.append(words[x]).append(" ");
            }else{
                list.add(line.toString());
                line = new StringBuilder(words[x]).append(" ");
            }
        }
        if(line.toString().length()>0){
            list.add(line.toString()); 
        }
         
        Object[] arrObj = list.toArray();
        String[] arrString = Arrays.copyOf(arrObj, arrObj.length, String[].class);
         
        return arrString;
    }
 
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And here unit test:

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@Test
        public void testSplitStringInWordsAndCreateArrayWithLineInSize(){
            String s = "Prodotti tricologici per la cura e la bellezza dei capelli,quali shampoo, lozioni per capelli, preparati per ondulare icapelli, preparati per effettuare la permanente dei capelli,tinture per capelli, gel per capelli, lacche e fissatori percapelli,preparati per ravvivare il colore dei capelli . ";
            Integer lineLength = 62;
            String[] out = FYStringUtils.splitStringInWordsAndCreateArrayWithLineInSize(s, lineLength);
            StringBuilder rebuild = new StringBuilder();
            for(int x=0;x<out.length;x++){
                //System.out.println("x-"+out[x]);
                assertThat(out.length<lineLength).isTrue();
                rebuild.append(out[x]);
            }
             
             
            assertThat(rebuild.toString()).isEqualTo(s);
             
        }
 
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