org.dromara.hutool.extra.management.JvmSpecInfo Maven / Gradle / Ivy
/*
* Copyright (c) 2013-2024 Hutool Team and hutool.cn
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.dromara.hutool.extra.management;
import org.dromara.hutool.core.util.SystemUtil;
import java.io.Serializable;
/**
* 代表Java Virtual Machine Specification的信息。
*/
public class JvmSpecInfo implements Serializable{
private static final long serialVersionUID = 1L;
private final String JAVA_VM_SPECIFICATION_NAME = SystemUtil.get("java.vm.specification.name", false);
private final String JAVA_VM_SPECIFICATION_VERSION = SystemUtil.get("java.vm.specification.version", false);
private final String JAVA_VM_SPECIFICATION_VENDOR = SystemUtil.get("java.vm.specification.vendor", false);
/**
* 取得当前JVM spec.的名称（取自系统属性：{@code java.vm.specification.name}）。
*
*
* 例如Sun JDK 1.4.2：{@code "Java Virtual Machine Specification"}
*
*
* @return 属性值，如果不能取得（因为Java安全限制）或值不存在，则返回{@code null}。
*
*/
public final String getName() {
return JAVA_VM_SPECIFICATION_NAME;
}
/**
* 取得当前JVM spec.的版本（取自系统属性：{@code java.vm.specification.version}）。
*
*
* 例如Sun JDK 1.4.2：{@code "1.0"}
*
*
* @return 属性值，如果不能取得（因为Java安全限制）或值不存在，则返回{@code null}。
*
*/
public final String getVersion() {
return JAVA_VM_SPECIFICATION_VERSION;
}
/**
* 取得当前JVM spec.的厂商（取自系统属性：{@code java.vm.specification.vendor}）。
*
*
* 例如Sun JDK 1.4.2：{@code "Sun Microsystems Inc."}
*
*
* @return 属性值，如果不能取得（因为Java安全限制）或值不存在，则返回{@code null}。
*
*/
public final String getVendor() {
return JAVA_VM_SPECIFICATION_VENDOR;
}
/**
* 将Java Virtual Machine Specification的信息转换成字符串。
*
* @return JVM spec.的字符串表示
*/
@Override
public final String toString() {
final StringBuilder builder = new StringBuilder();
ManagementUtil.append(builder, "JavaVM Spec. Name: ", getName());
ManagementUtil.append(builder, "JavaVM Spec. Version: ", getVersion());
ManagementUtil.append(builder, "JavaVM Spec. Vendor: ", getVendor());
return builder.toString();
}
}