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fix code

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This commit is contained in:
Looly 2023-03-25 05:00:32 +08:00
parent f363971187
commit 46225d8af3
2 changed files with 31 additions and 5 deletions
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2
hutool-core/src/main/java/cn/hutool/core/reflect/LookupFactory.java
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@ -29,7 +29,7 @@ public class LookupFactory {
private static Constructor<MethodHandles.Lookup> jdk8LookupConstructor; private static Constructor<MethodHandles.Lookup> jdk8LookupConstructor;
static { static {
if(JdkUtil.isJdk8()){ if(JdkUtil.IS_JDK8){
// jdk8 这种方式其实也适用于jdk9及以上的版本,但是上面优先,可以避免 jdk9 反射警告 // jdk8 这种方式其实也适用于jdk9及以上的版本,但是上面优先,可以避免 jdk9 反射警告
jdk8LookupConstructor = createJdk8LookupConstructor(); jdk8LookupConstructor = createJdk8LookupConstructor();
} else { } else {

34
hutool-core/src/main/java/cn/hutool/core/util/JdkUtil.java
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@ -13,18 +13,44 @@ public class JdkUtil {
* JDK版本 * JDK版本
*/ */
public static final int JVM_VERSION; public static final int JVM_VERSION;
/**
* 是否JDK8<br>
* 由于Hutool基于JDK8编译，当使用JDK版本低于8时，不支持。
*/
public static final boolean IS_JDK8;
/**
* 是否大于等于JDK17
*/
public static final boolean IS_AT_LEAST_JDK17;
/**
* 是否GraalVM环境
*/
public static final boolean IS_GRAAL;
/**
* 是否Android环境
*/
public static final boolean IS_ANDROID;
static { static {
// JVM版本
JVM_VERSION = _getJvmVersion(); JVM_VERSION = _getJvmVersion();
IS_JDK8 = 8 == JVM_VERSION;
IS_AT_LEAST_JDK17 = JVM_VERSION >= 17;
// JVM名称
final String jvmName = _getJvmName();
IS_GRAAL = jvmName.equals("Substrate VM");
IS_ANDROID = jvmName.equals("Dalvik");
} }
/** /**
* 是否JDK8 * 获取JVM名称
* *
* @return 是否JDK8 * @return JVM名称
*/ */
public static boolean isJdk8() { private static String _getJvmName() {
return 8 == JVM_VERSION; return System.getProperty("java.vm.name");
} }
/** /**