diff --git a/classlib/src/main/java/org/teavm/classlib/java/lang/TString.java b/classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
index de4cc9d69..be541ea68 100644
--- a/classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
+++ b/classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
@@ -487,6 +487,22 @@ public class TString extends TObject implements TSerializable, TComparable<TStri
         return substring(lower, upper + 1);
     }
 
+    public TString stripLeading() {
+        var lower = 0;
+        while (lower < length() && Character.isWhitespace(charAt(lower))) {
+            ++lower;
+        }
+        return substring(lower, length());
+    }
+
+    public TString stripTrailing() {
+        var upper = length() - 1;
+        while (0 <= upper && Character.isWhitespace(charAt(upper))) {
+            --upper;
+        }
+        return substring(0, upper + 1);
+    }
+
     @Override
     public String toString() {
         return (String) (Object) this;
diff --git a/tests/src/test/java/org/teavm/classlib/java/lang/StringTest.java b/tests/src/test/java/org/teavm/classlib/java/lang/StringTest.java
index 88891a42e..9259028f1 100644
--- a/tests/src/test/java/org/teavm/classlib/java/lang/StringTest.java
+++ b/tests/src/test/java/org/teavm/classlib/java/lang/StringTest.java
@@ -209,6 +209,26 @@ public class StringTest {
         assertEquals("ab", "\t\n \u2008ab\r\f".strip());
     }
 
+    @Test
+    public void stripLeadingWorks() {
+        assertEquals("ab   ", "  ab   ".stripLeading());
+        assertEquals("ab   ", "ab   ".stripLeading());
+        assertEquals("ab", "ab".stripLeading());
+        assertEquals("a b", "a b".stripLeading());
+        assertEquals("", "  \t".stripLeading());
+        assertEquals("ab", "\t\n \u2008\r\fab".stripLeading());
+    }
+
+    @Test
+    public void stripTrailingWorks() {
+        assertEquals("  ab", "  ab   ".stripTrailing());
+        assertEquals("  ab", "  ab".stripTrailing());
+        assertEquals("ab", "ab".stripTrailing());
+        assertEquals("a b", "a b".stripTrailing());
+        assertEquals("", "  \t".stripTrailing());
+        assertEquals("ab", "ab\t\n \u2008\r\f".stripTrailing());
+    }
+
     @Test
     public void convertedToCharArray() {
         char[] array = "123".toCharArray();