Java 11 String APIs
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package com.baeldung;
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import static org.hamcrest.CoreMatchers.is;
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import static org.junit.Assert.assertTrue;
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import org.junit.Test;
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public class NewStringAPIUnitTest {
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@Test
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public void whenRepeatStringTwice_thenGetStringTwice() {
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String output = "La ".repeat(2) + "Land";
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is(output).equals("La La Land");
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}
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@Test
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public void whenStripString_thenReturnStringWithoutWhitespaces() {
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is("\n\t hello \u2005".strip()).equals("hello");
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}
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@Test
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public void whenTrimAdvanceString_thenReturnStringWithWhitespaces() {
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is("\n\t hello \u2005".trim()).equals("hello \u2005");
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}
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@Test
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public void whenBlankString_thenReturnTrue() {
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assertTrue("\n\t\u2005 ".isBlank());
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}
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@Test
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public void whenMultilineString_thenReturnNonEmptyLineCount() {
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String multilineStr = "This is\n \n a multiline\n string.";
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long lineCount = multilineStr.lines()
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.filter(String::isBlank)
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.count();
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is(lineCount).equals(3L);
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}
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}
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