Data commit

Task/URL-encoding/Java/url-encoding-1.java

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+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;

Task/URL-encoding/Java/url-encoding-2.java

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+URLEncoder.encode("http://foo bar/", StandardCharsets.UTF_8)

Task/URL-encoding/Java/url-encoding-3.java

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+String encode(String string) {
+    StringBuilder encoded = new StringBuilder();
+    for (char character : string.toCharArray()) {
+        switch (character) {
+            /* rfc3986 and html5 */
+            case '-', '.', '_', '~', '*' -> encoded.append(character);
+            case ' ' -> encoded.append('+');
+            default -> {
+                if (alphanumeric(character))
+                    encoded.append(character);
+                else {
+                    encoded.append("%");
+                    encoded.append("%02x".formatted((int) character));
+                }
+            }
+        }
+    }
+    return encoded.toString();
+}
+
+boolean alphanumeric(char character) {
+    return (character >= 'A' && character <= 'Z')
+        || (character >= 'a' && character <= 'z')
+        || (character >= '0' && character <= '9');
+}