Use of 49 commonly used tool classes built in SpringBoot

import ;

// Check whether the string is emptyboolean isEmpty = (null);  // true
boolean isEmpty2 = ("");  // true

// Check if the string has text contentboolean hasText = ("  ");  // false
boolean hasText2 = ("hello");  // true

// Split stringString[] parts = ("a,b,c", ",");

// Clear the beginning and end blanksString trimmed = ("  hello  ");  // "hello"

import ;

AntPathMatcher matcher = new AntPathMatcher();
boolean match1 = ("/users/*", "/users/123");  // true
boolean match2 = ("/users/**", "/users/123/orders");  // true
boolean match3 = ("/user?", "/user1");  // true

// Extract path variablesMap<String, String> vars = (
    "/users/{id}", "/users/42");  // {id=42}

import ;

boolean matches1 = ("user*", "username");  // true
boolean matches2 = ("user?", "user1");  // true
boolean matches3 = (
    new String[]{"user*", "admin*"}, "username");  // true

import ;

PropertyPlaceholderHelper helper = new PropertyPlaceholderHelper("${", "}");
Properties props = new Properties();
("name", "World");
("greeting", "Hello ${name}!");

String result = ("${greeting}", props::getProperty);
// "Hello World!"

import ;

// Check whether the collection is emptyboolean isEmpty = (null);  // true
boolean isEmpty2 = (());  // true

// Collection operationList<String> list1 = ("a", "b", "c");
List<String> list2 = ("b", "c", "d");
Collection<String> intersection = (list1, list2);  // [b, c]

// Merge collectionsList<String> target = new ArrayList<>();
(new String[]{"a", "b"}, target);

import ;
import ;

MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
("colors", "red");
("colors", "blue");
("sizes", "large");

List<String> colors = ("colors");  // [red, blue]

import ;

// Create reference maps in high concurrency scenarios (similar to WeakHashMap but thread-safe)Map<String, Object> cache = new ConcurrentReferenceHashMap<>();
("key1", new LargeObject());

import ;

// parse strings containing system attributesString javaHome = ("${}");
String pathWithDefault = (
    "${:default}");  // "default"

import ;

// Get the field of the classField field = (, "name");
(field);
(field, person, "John");

// Call methodMethod method = (, "setAge", );
(method);
(method, person, 30);

// Field callback(, field -> {
    (());
});

import ;

// Get the class nameString shortName = ("");  // "MyClass"

// Check if the class existsboolean exists = ("", null);  // true

// Get all interfacesClass<?>[] interfaces = ();

// Get user-defined class loaderClassLoader classLoader = ();

import ;

MethodInvoker invoker = new MethodInvoker();
(new MyService());
("calculateTotal");
(new Object[]{100, 0.2});
();
Object result = ();

import ;

// Copy propertiesPerson source = new Person("John", 30);
Person target = new Person();
(source, target);

// Instantiate the classPerson newPerson = ();

// Find methodMethod method = (, "setName", );

import ;

// Copy the file contentsbyte[] bytes = (new File(""));
(bytes, new File(""));

// Read textString content = (
    new InputStreamReader(new FileInputStream(""), "UTF-8"));

// Stream copy(inputStream, outputStream);

import ;

// Get the fileFile file = ("classpath:");

// Check if it is a URLboolean isUrl = ("");

// Get URLURL url = ("classpath:");

import ;

// Streaming operationbyte[] data = (inputStream);
String text = (inputStream, StandardCharsets.UTF_8);
(inputStream, outputStream);
("Hello", StandardCharsets.UTF_8, outputStream);

import ;

// Delete the directoryboolean deleted = (new File("/tmp/test"));

// Copy the directory(new File("source"), new File("target"));

import ;
import ;
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// Get matching resourcesResource[] resources = (
    new PathMatchingResourcePatternResolver())
    .getResources("classpath*:META-INF/*.xml");

import ;
import ;

// Get CookiesCookie cookie = (request, "sessionId");

// Get the request pathString path = (request);

// Get parameters from the requestint pageSize = (request, "pageSize", 10);

import ;

// Codec URI componentString encoded = ("path with spaces", "UTF-8");
String decoded = (encoded, "UTF-8");

import ;

// Build URIURI uri = ("")
    .path("/products")
    .queryParam("category", "books")
    .queryParam("sort", "price")
    .build()
    .toUri();

import ;
import ;

ContentCachingRequestWrapper wrapper = new ContentCachingRequestWrapper(request);
// After the request is processedbyte[] body = ();

import ;

// HTML escapeString escaped = ("<script>alert('XSS')</script>");
// <script>alert('XSS')</script>

// HTML inversionString unescaped = ("<b>Bold</b>");
// <b>Bold</b>

import ;

// Common assertions(object, "Object must not be null");
(name, "Name must not be empty");
(amount > 0, "Amount must be positive");
(items, "Items must not be empty");
(isInitialized, "Service is not initialized");

import ;

// Object Toolboolean isEmpty = (null);  // true
boolean isEmpty2 = (new String[0]);  // true

String nullSafe = (null);  // "null"
boolean equals = (obj1, obj2);

// default valueString value = (null, "default");

import ;

// Digital conversionInteger parsed = ("42", );
Double converted = (42, );

import ;
import ;

// Format dateString formatted = ().format(new Date());

import ;

// Timing toolStopWatch watch = new StopWatch("TaskName");
("phase1");
// Execute task 1(100);
();

("phase2");
// Execute task 2(200);
();

// Output report(());
("Total time: " + () + "ms");

import ;

// MD5 hashString md5 = DigestUtils.md5DigestAsHex("password".getBytes());

// File MD5String fileMd5;
try (InputStream is = new FileInputStream("")) {
    fileMd5 = DigestUtils.md5DigestAsHex(is);
}

import .Base64Utils;

// Base64 codecbyte[] data = "Hello World".getBytes();
String encoded = (data);
byte[] decoded = (encoded);

import ;
import ;

// Text encryptionString password = "secret";
String salt = "deadbeef";
TextEncryptor encryptor = (password, salt);
String encrypted = ("Message");
String decrypted = (encrypted);

import ;
import ;

// JSON parsingJsonParser parser = ();
Map<String, Object> parsed = ("{"name":"John", "age":30}");
List<Object> parsedList = ("[1, 2, 3]");

import ;

// Type analysisResolvableType type = ();
ResolvableType elementType = (0);

// Generic type processingResolvableType mapType = (
    , , );

import .MappingJackson2HttpMessageConverter;
import ;

// Custom JSON converterObjectMapper mapper = new ObjectMapper();
// Configure mapperMappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(mapper);

import .;

// Random string generationString random = (10);
String randomLetters = (8);
String randomNumeric = (6);

import ;
import ;
import ;

// Merge multiple CompletableFuture resultsList<CompletableFuture<String>> futures = /* Multiple asynchronous operations */;
CompletableFuture<List<String>> allResults = (
    (new CompletableFuture[0]))
    .thenApply(v -> ()
        .map(CompletableFuture::join)
        .collect(()));

import ;
import ;

// Cache controlCacheControl cacheControl = (1, )
    .noTransform()
    .mustRevalidate();

String headerValue = ();

import ;

// Find annotationsComponent annotation = (, );

// Get annotation attributesString value = (annotation, "value").toString();

// Merge annotationsComponent mergedAnnotation = (
    annotation, );

import ;

// Type conversionDefaultConversionService conversionService = new DefaultConversionService();
String strValue = "42";
Integer intValue = (strValue, );

import ;

// HTTP header processingHttpHeaders headers = new HttpHeaders();
("Content-Type", "application/json");
(1024);
("max-age=3600");

import ;
import ;
import ;

// Infer media type based on file nameOptional<MediaType> mediaType = ("");
// application/pdf

import ;

// MIME type constants and parsingboolean isCompatible = MimeTypeUtils.APPLICATION_JSON.isCompatibleWith(
    MimeTypeUtils.APPLICATION_JSON_UTF8);

import ;
import ;

// Create a WebClientWebClient webClient = ()
    .baseUrl("")
    .defaultHeader("Authorization", "Bearer token")
    .filter((
        clientRequest -> {
            // Request processing            return (clientRequest);
        }))
    .build();

import ;
import ;

// Add attribute sourceStandardEnvironment env = new StandardEnvironment();
Map<String, Object> map = new HashMap<>();
("", "MyApp");
().addFirst(new MapPropertySource("my-properties", map));

import ;

// Publish an eventApplicationEventPublisher publisher = /* Get publisher */;
(new CustomEvent("Something happened"));

import .;
import ;

// Get/set the current localeLocale currentLocale = ();
();

import ;

// AOP tool methodboolean isAopProxy = (bean);
boolean isCglibProxy = (bean);
Class<?> targetClass = (bean);

import ;

// Create a proxyProxyFactory factory = new ProxyFactory(targetObject);
();
(new MyMethodInterceptor());
MyInterface proxy = (MyInterface) ();

import ;

// Scan the classpathClassPathScanningCandidateComponentProvider scanner = 
    new ClassPathScanningCandidateComponentProvider(true);
(new AnnotationTypeFilter());
Set<BeanDefinition> beans = ("");

import ;
import ;

// parse YAML filesYamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
(new ClassPathResource(""));
Properties properties = ();