Difference between String trim() and strip() methods in Java 11

Question

Among other changes, JDK 11 introduces 6 new methods for java.lang.String class:

• repeat(int) - Repeats the String as many times as provided by the

Answer 1

Here is a unit-test that illustrates the answer by @MikhailKholodkov, using Java 11.

(Note that \u2000 is above \u0020 and not considered whitespace by trim())

public class StringTestCase {
    @Test
    public void testSame() {
        String s = "\t abc \n";

        assertEquals("abc", s.trim());
        assertEquals("abc", s.strip());
    }

    @Test
    public void testDifferent() {
        Character c = '\u2000';
        String s = c + "abc" + c;

        assertTrue(Character.isWhitespace(c));
        assertEquals(s, s.trim());
        assertEquals("abc", s.strip());
    }
}