search
HomeJavajavaTutorialJava data processing example code

Java data processing example code

Jun 25, 2017 am 10:19 AM
javadata processing

 For the form "(TYPE=SITA##)&&(((CTYP=FPL##)||(CTYP=CHG##)||(CTYP=CNL##)||(CTYP=DLA## )||(CTYP=DL##)||(CTYP=ED##))&&(ADEP=ZSSS##))” often appears as the judgment condition of something. It is necessary to calculate the final condition of the entire condition. The result (true/false).

The Java code is given below

  1 package com.test;  2   3 import net.sourceforge.jeval.Evaluator;  4   5 public class T1 {  6   7     public static void main(String[] args) throws Exception {  8         String condition ="(TYPE=SITA##)&&(((CTYP=FPL##)||(CTYP=CHG##)||(CTYP=CNL##)||(CTYP=DLA##)||(CTYP=DL##)||(CTYP=ED##))&&(ADEP=ZSSS##))";  9         condition = replaceExpression(condition, "TYPE=", "SITA", "="); 10         condition = replaceExpression(condition, "CTYP=", "FPL", "="); 11         condition = replaceExpression(condition, "ADEP=", "", "="); 12         System.out.println("condition:"+condition);  //condition:(1)&&(((1)||(0)||(0)||(0)||(0)||(0))&&(0)) 13          14         /** 15          * 数字表达式解析工具 16          *    Evaluator需要下载jeval包,本文后附上链接 17          */ 18         Evaluator evaluator = new Evaluator(); 19         boolean b = evaluator.getBooleanResult(condition);  // false 20         System.out.println(b);        
 21         System.out.println(evaluator.evaluate("2+3"));  // 5.0 22          23     } 24      25     /** 26      * 
 27      * @param condition 28      * @param replace 29      * @param toBeCompared 30      * @param operators 31      * @return 32      * @throws Exception 对于不符合计算的会抛出异常 33      */ 34     public static String replaceExpression(String condition, String replace, 35             String toBeCompared, String operators) throws Exception { 36         while (condition.contains(replace)) { 37             int start = condition.indexOf(replace); 38             int end = condition.indexOf("##", start); 39             String express = condition.substring(start, end); 40             express = express.substring(replace.length()); 41             if (">=".equals(operators)) { 42  43                 if (Long.parseLong(toBeCompared) >= Long.parseLong(express)) { 44                     condition = condition.substring(0, start) + "1" 45                             + condition.substring(end + 2); 46                 } else { 47                     condition = condition.substring(0, start) + "0" 48                             + condition.substring(end + 2); 49                 } 50             } else if ("".equals(operators)) { 59  60                 if (Long.parseLong(toBeCompared) > Long.parseLong(express)) { 61                     condition = condition.substring(0, start) + "1" 62                             + condition.substring(end + 2); 63                 } else { 64                     condition = condition.substring(0, start) + "0" 65                             + condition.substring(end + 2); 66                 } 67             } else if ("

Related jar package download:

The above is the detailed content of Java data processing example code. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How does the JVM contribute to Java's 'write once, run anywhere' (WORA) capability?How does the JVM contribute to Java's 'write once, run anywhere' (WORA) capability?May 02, 2025 am 12:25 AM

JVM implements the WORA features of Java through bytecode interpretation, platform-independent APIs and dynamic class loading: 1. Bytecode is interpreted as machine code to ensure cross-platform operation; 2. Standard API abstract operating system differences; 3. Classes are loaded dynamically at runtime to ensure consistency.

How do newer versions of Java address platform-specific issues?How do newer versions of Java address platform-specific issues?May 02, 2025 am 12:18 AM

The latest version of Java effectively solves platform-specific problems through JVM optimization, standard library improvements and third-party library support. 1) JVM optimization, such as Java11's ZGC improves garbage collection performance. 2) Standard library improvements, such as Java9's module system reducing platform-related problems. 3) Third-party libraries provide platform-optimized versions, such as OpenCV.

Explain the process of bytecode verification performed by the JVM.Explain the process of bytecode verification performed by the JVM.May 02, 2025 am 12:18 AM

The JVM's bytecode verification process includes four key steps: 1) Check whether the class file format complies with the specifications, 2) Verify the validity and correctness of the bytecode instructions, 3) Perform data flow analysis to ensure type safety, and 4) Balancing the thoroughness and performance of verification. Through these steps, the JVM ensures that only secure, correct bytecode is executed, thereby protecting the integrity and security of the program.

How does platform independence simplify deployment of Java applications?How does platform independence simplify deployment of Java applications?May 02, 2025 am 12:15 AM

Java'splatformindependenceallowsapplicationstorunonanyoperatingsystemwithaJVM.1)Singlecodebase:writeandcompileonceforallplatforms.2)Easyupdates:updatebytecodeforsimultaneousdeployment.3)Testingefficiency:testononeplatformforuniversalbehavior.4)Scalab

How has Java's platform independence evolved over time?How has Java's platform independence evolved over time?May 02, 2025 am 12:12 AM

Java's platform independence is continuously enhanced through technologies such as JVM, JIT compilation, standardization, generics, lambda expressions and ProjectPanama. Since the 1990s, Java has evolved from basic JVM to high-performance modern JVM, ensuring consistency and efficiency of code across different platforms.

What are some strategies for mitigating platform-specific issues in Java applications?What are some strategies for mitigating platform-specific issues in Java applications?May 01, 2025 am 12:20 AM

How does Java alleviate platform-specific problems? Java implements platform-independent through JVM and standard libraries. 1) Use bytecode and JVM to abstract the operating system differences; 2) The standard library provides cross-platform APIs, such as Paths class processing file paths, and Charset class processing character encoding; 3) Use configuration files and multi-platform testing in actual projects for optimization and debugging.

What is the relationship between Java's platform independence and microservices architecture?What is the relationship between Java's platform independence and microservices architecture?May 01, 2025 am 12:16 AM

Java'splatformindependenceenhancesmicroservicesarchitecturebyofferingdeploymentflexibility,consistency,scalability,andportability.1)DeploymentflexibilityallowsmicroservicestorunonanyplatformwithaJVM.2)Consistencyacrossservicessimplifiesdevelopmentand

How does GraalVM relate to Java's platform independence goals?How does GraalVM relate to Java's platform independence goals?May 01, 2025 am 12:14 AM

GraalVM enhances Java's platform independence in three ways: 1. Cross-language interoperability, allowing Java to seamlessly interoperate with other languages; 2. Independent runtime environment, compile Java programs into local executable files through GraalVMNativeImage; 3. Performance optimization, Graal compiler generates efficient machine code to improve the performance and consistency of Java programs.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.