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Merge branch 'master' into JAVA-8204

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freelansam
2021-11-09 18:20:05 +05:30
committed by GitHub
parent 67a62f842c dc5826c607
commit 2dd519f647
209 changed files with 3217 additions and 1314 deletions
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2
core-java-modules/core-java-string-operations-3/README.md
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@@ -7,3 +7,5 @@
- [Validate String as Filename in Java](https://www.baeldung.com/java-validate-filename)
- [Count Spaces in a Java String](https://www.baeldung.com/java-string-count-spaces)
- [Remove Accents and Diacritics From a String in Java](https://www.baeldung.com/java-remove-accents-from-text)
- [Remove Beginning and Ending Double Quotes from a String](https://www.baeldung.com/java-remove-start-end-double-quote)
- [Splitting a Java String by Multiple Delimiters](https://www.baeldung.com/java-string-split-multiple-delimiters)

20
core-java-modules/core-java-string-operations-3/src/main/java/com/baeldung/firstword/FirstWordGetter.java Normal file
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@@ -0,0 +1,20 @@
package com.baeldung.firstword;
public class FirstWordGetter {
public static void main(String[] args) {
String input = "Roberto \"I wish you a bug-free day\"";
System.out.println("Using split: " + getFirstWordUsingSplit(input));
System.out.println("Using subString: " + getFirstWordUsingSubString(input));
}
public static String getFirstWordUsingSubString(String input) {
int index = input.contains(" ") ? input.indexOf(" ") : 0;
return input.substring(0, index);
}
public static String getFirstWordUsingSplit(String input) {
String[] tokens = input.split(" ", 2);
return tokens[0];
}
}

30
core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/firstword/FirstWordGetterUnitTest.java Normal file
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@@ -0,0 +1,30 @@
package com.baeldung.firstword;
import static com.baeldung.firstword.FirstWordGetter.getFirstWordUsingSplit;
import static com.baeldung.firstword.FirstWordGetter.getFirstWordUsingSubString;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
public class FirstWordGetterUnitTest {
@Test
public void givenString_whenSplit_thenFirstWordIsReturned() {
assertEquals("Roberto", getFirstWordUsingSplit("Roberto \"I wish you a bug-free day\""));
}
@Test
public void givenStringWithNoSpace_whenSplit_thenFirstWordIsReturned() {
assertEquals("StringWithNoSpace", getFirstWordUsingSplit("StringWithNoSpace"));
}
@Test
public void givenString_whenPassedToSubstring_thenFirstWordIsReturned() {
assertEquals("Roberto", getFirstWordUsingSubString("Roberto \"I wish you a bug-free day\""));
}
@Test
public void givenStringWithNoSpace_whenPassedToSubstring_thenFirstWordIsReturned() {
assertEquals("", getFirstWordUsingSubString("StringWithNoSpace"));
}
}

6
core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/multipledelimiterssplit/MultipleDelimitersSplitUnitTest.java
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@@ -17,7 +17,7 @@ public class MultipleDelimitersSplitUnitTest {
@Test
public void givenString_whenSplittingByMultipleDelimitersWithRegEx_thenStringSplit() {
String example = "Mary;Thomas:Jane-Kate";
String[] names = example.split(";|:|-");
String[] names = example.split("[;:-]");
String[] expectedNames = new String[]{"Mary", "Thomas", "Jane", "Kate"};
Assertions.assertEquals(4, names.length);
Assertions.assertArrayEquals(expectedNames, names);
@@ -38,7 +38,7 @@ public class MultipleDelimitersSplitUnitTest {
String example = "Mary;Thomas:Jane-Kate";
String[] expectedArray = new String[]{"Mary", "Thomas", "Jane", "Kate"};
Iterable<String> expected = Arrays.asList(expectedArray);
Iterable<String> names = Splitter.on(Pattern.compile(";|:|-")).split(example);
Iterable<String> names = Splitter.on(Pattern.compile("[;:-]")).split(example);
Assertions.assertEquals(4, Iterators.size(names.iterator()));
Assertions.assertIterableEquals(expected, names);
}
@@ -48,7 +48,7 @@ public class MultipleDelimitersSplitUnitTest {
String example = "Mary;Thomas:Jane-Kate";
String[] expectedArray = new String[]{"Mary", "Thomas", "Jane", "Kate"};
Iterable<String> expected = Arrays.asList(expectedArray);
Iterable<String> names = Splitter.onPattern(";|:|-").split(example);
Iterable<String> names = Splitter.onPattern("[;:-]").split(example);
Assertions.assertEquals(4, Iterators.size(names.iterator()));
Assertions.assertIterableEquals(expected, names);
}