随笔分类 - Java
摘要：byte[] => hexString package io.oar; import java.util.Formatter; public class TestByteToHex{ public static void main(String[] args){ byte[] bytes = {-5
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摘要：开启管理访问: conf/tomcat-users.xml : <role rolename="admin-gui" /> <role rolename="admin-script" /> <role rolename="manager-gui" /> <role rolename="manager
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摘要：public class B { public static final void main(String[] args) { System.out.println(System.getProperty("bb")); System.out.println(System.getProperty("f
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摘要：@Test public void d() throws IOException{ URL url = new URL("http://baidu.com"); InputStream inputStream; URLConnection urlConnection = url.openConnec
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摘要：classpath: import java.io.File; import java.util.Arrays; public class B { public static final void main(String[] args) { String property = System.getP
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摘要：package com.company; public class Wig{ public static void main(String[] args){ Object[] objects = new String[]{"a", "b", "c"}; if(objects instanceof S
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摘要：public class Zak { static ThreadLocal<Integer> threadLocal = new ThreadLocal<>(); public static void main(String[] args) throws InterruptedException{
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摘要：<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:sc
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摘要：java -cp ".;./mysql-connector-java-8.0.28.jar" zak.Zak https://stackoverflow.com/questions/2839321/connect-java-to-a-mysql-database package zak; impor
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摘要：Server & Client Utils.java package den; import java.io.*; import java.nio.charset.StandardCharsets; public class Utils{ public static byte[] streamToB
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摘要：Install: unzip -o apache-maven-3.8.4-bin.zip -d /usr/local cd /usr/local ln -svnf apache-maven-3.8.4 maven Maven – Download Apache Maven update-altern
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摘要：Maven pom.xml Gradle build.gradle build.gradel allprojects { repositories { maven { url 'file:///D:/program/repository'} mavenLocal() maven { name "Al
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摘要：package ersatz; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; public class Ersatz { public static vo
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摘要：package ersatz; import org.junit.jupiter.api.Test; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStre
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摘要：解决超卖 package ersatz.thread; public class T { public static void main(String[] args) { Ticket ticket = new Ticket(); new Thread(ticket).start(); new Th
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摘要：package ersatz.thread; public class T { public static void main(String[] args) throws InterruptedException { B b = new B(); b.start(); Thread.sleep(5
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摘要：package ersatz.thread; public class T1 { public static void main(String[] args) throws InterruptedException { C c = new C(); c.start(); for (int i = 0
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