添加 Predicates 工具类。

src/main/java/xyz/zhouxy/plusone/commons/function/Predicates.java

@@ -0,0 +1,10 @@
+package xyz.zhouxy.plusone.commons.function;
+
+import java.util.function.Predicate;
+
+public class Predicates<T> {
+
+    public final Predicate<T> of(Predicate<? super T> predicate) {
+        return predicate::test;
+    }
+}

src/test/java/xyz/zhouxy/plusone/commons/function/FunctionTests.java

@@ -0,0 +1,22 @@
+package xyz.zhouxy.plusone.commons.function;
+
+import java.util.function.Predicate;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.api.Test;
+import xyz.zhouxy.plusone.commons.util.Assert;
+
+class FunctionTests {
+
+    @Test
+    void test() {
+        String str = "";
+        Predicate<String> predicate = new Predicates<String>().of(this::nonNull)
+                .or(StringUtils::isNotBlank);
+        Assert.isTrue(predicate.test(str), "未通过");
+    }
+
+    boolean nonNull(Object obj) {
+        return obj != null;
+    }
+}