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I need to do changes just on specific words

How do I generate random integers within a specific range in Java?How to upper case every first letter of word in a string?Is null check needed before calling instanceof?Capitalize only the First Letter in a String javaRecognizing and replacing parts of a string in java 7Check String for Uppercase letter and find positionMaking only the first letter of a word uppercasegrouping words by first characterconvert to capital letter using java 8 streamConverting given string to camel case recursively

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2

1

I have a String problem for the Java 8 streams. They want me to change all the first letter into uppercase letter just if the words aren't into "the", "a", "to", "of", "in" group.

My problem is that the filter command does delete the words from the group and I have to keep them.

I have already done the part for the upper case first letter but I have no idea how to make the "jump" over the group of words

private List<String> ignoredWords = Arrays.asList("the", "a", "to", "of", "in");
String entryParts[] = toTitlelize.split(" ");

List<String> sentenceParts = Arrays.asList(entryParts);
List<String> finalSentence = sentenceParts.stream() 
 .map(WordUtils::capitalize)
 .collect(toList());

For example :

if toTitlelize = "I love to eat pizza in my home"

It should return

"I Love to Eat Pizza in My Home"

for the moment it gives me:

"I Love To Eat Pizza in My Home"

java filter java-stream

share|improve this question

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You can choose to implement capitalize in such a way that it ignores the words from ignoredWords collection as well.
  
  – Naman
  Mar 23 at 3:04
  

  
  
  
  

add a comment | 

2

1

I have a String problem for the Java 8 streams. They want me to change all the first letter into uppercase letter just if the words aren't into "the", "a", "to", "of", "in" group.

My problem is that the filter command does delete the words from the group and I have to keep them.

I have already done the part for the upper case first letter but I have no idea how to make the "jump" over the group of words

private List<String> ignoredWords = Arrays.asList("the", "a", "to", "of", "in");
String entryParts[] = toTitlelize.split(" ");

List<String> sentenceParts = Arrays.asList(entryParts);
List<String> finalSentence = sentenceParts.stream() 
 .map(WordUtils::capitalize)
 .collect(toList());

For example :

if toTitlelize = "I love to eat pizza in my home"

It should return

"I Love to Eat Pizza in My Home"

for the moment it gives me:

"I Love To Eat Pizza in My Home"

java filter java-stream

share|improve this question

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You can choose to implement capitalize in such a way that it ignores the words from ignoredWords collection as well.
  
  – Naman
  Mar 23 at 3:04
  

  
  
  
  

add a comment | 

I have a String problem for the Java 8 streams. They want me to change all the first letter into uppercase letter just if the words aren't into "the", "a", "to", "of", "in" group.

My problem is that the filter command does delete the words from the group and I have to keep them.

I have already done the part for the upper case first letter but I have no idea how to make the "jump" over the group of words

private List<String> ignoredWords = Arrays.asList("the", "a", "to", "of", "in");
String entryParts[] = toTitlelize.split(" ");

List<String> sentenceParts = Arrays.asList(entryParts);
List<String> finalSentence = sentenceParts.stream() 
 .map(WordUtils::capitalize)
 .collect(toList());

For example :

if toTitlelize = "I love to eat pizza in my home"

It should return

"I Love to Eat Pizza in My Home"

for the moment it gives me:

"I Love To Eat Pizza in My Home"

java filter java-stream

share|improve this question

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

private List<String> ignoredWords = Arrays.asList("the", "a", "to", "of", "in");
String entryParts[] = toTitlelize.split(" ");

List<String> sentenceParts = Arrays.asList(entryParts);
List<String> finalSentence = sentenceParts.stream() 
 .map(WordUtils::capitalize)
 .collect(toList());

if toTitlelize = "I love to eat pizza in my home"

share|improve this question

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

share|improve this question

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

edited Mar 23 at 1:25

Carlos Cavero

1,90841023

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

asked Mar 22 at 22:59

Artene Dragoş AndreiArtene Dragoş Andrei

133

1 Answer
1

active

oldest

votes

2

You can use a simple if statement in you mapping step:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> 
 if (ignoredWords.contains(word)) 
 return word;
 
 return WordUtils.capitalize(word);
 )
 .collect(Collectors.toList());

As an alternative you can use filter() and findFirst() on the ignoredWords and use an Optional:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> ignoredWords.stream().filter(w -> w.equals(word)).findFirst().orElse(WordUtils.capitalize(word)))
 .collect(Collectors.toList());

I also would recommend to use a HashSet instead of a List, because the words are unique and contains() is much faster:

HashSet<String> ignoredWords = new HashSet<>(Arrays.asList("the", "a", "to", "of", "in"));

The result of String.join(" ", finalSentence); will be:

I Love to Eat Pizza in My Home

share|improve this answer

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

add a comment | 

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2

You can use a simple if statement in you mapping step:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> 
 if (ignoredWords.contains(word)) 
 return word;
 
 return WordUtils.capitalize(word);
 )
 .collect(Collectors.toList());

As an alternative you can use filter() and findFirst() on the ignoredWords and use an Optional:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> ignoredWords.stream().filter(w -> w.equals(word)).findFirst().orElse(WordUtils.capitalize(word)))
 .collect(Collectors.toList());

I also would recommend to use a HashSet instead of a List, because the words are unique and contains() is much faster:

HashSet<String> ignoredWords = new HashSet<>(Arrays.asList("the", "a", "to", "of", "in"));

The result of String.join(" ", finalSentence); will be:

I Love to Eat Pizza in My Home

share|improve this answer

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

add a comment | 

2

You can use a simple if statement in you mapping step:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> 
 if (ignoredWords.contains(word)) 
 return word;
 
 return WordUtils.capitalize(word);
 )
 .collect(Collectors.toList());

As an alternative you can use filter() and findFirst() on the ignoredWords and use an Optional:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> ignoredWords.stream().filter(w -> w.equals(word)).findFirst().orElse(WordUtils.capitalize(word)))
 .collect(Collectors.toList());

I also would recommend to use a HashSet instead of a List, because the words are unique and contains() is much faster:

HashSet<String> ignoredWords = new HashSet<>(Arrays.asList("the", "a", "to", "of", "in"));

The result of String.join(" ", finalSentence); will be:

I Love to Eat Pizza in My Home

share|improve this answer

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

add a comment | 

You can use a simple if statement in you mapping step:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> 
 if (ignoredWords.contains(word)) 
 return word;
 
 return WordUtils.capitalize(word);
 )
 .collect(Collectors.toList());

As an alternative you can use filter() and findFirst() on the ignoredWords and use an Optional:

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> ignoredWords.stream().filter(w -> w.equals(word)).findFirst().orElse(WordUtils.capitalize(word)))
 .collect(Collectors.toList());

I also would recommend to use a HashSet instead of a List, because the words are unique and contains() is much faster:

HashSet<String> ignoredWords = new HashSet<>(Arrays.asList("the", "a", "to", "of", "in"));

The result of String.join(" ", finalSentence); will be:

I Love to Eat Pizza in My Home

share|improve this answer

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> 
 if (ignoredWords.contains(word)) 
 return word;
 
 return WordUtils.capitalize(word);
 )
 .collect(Collectors.toList());

List<String> finalSentence = Arrays.stream(entryParts)
 .map(word -> ignoredWords.stream().filter(w -> w.equals(word)).findFirst().orElse(WordUtils.capitalize(word)))
 .collect(Collectors.toList());

HashSet<String> ignoredWords = new HashSet<>(Arrays.asList("the", "a", "to", "of", "in"));

share|improve this answer

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531

answered Mar 23 at 0:06

Samuel PhilippSamuel Philipp

4,66431531