BE THE CODER > Spring > Expression Language

The Spring Expression Language (SpEL) is a simple and powerful expression language which helps to query and manipulate objects at runtime. The following example shows string case change using SpEL. We can also invoke other instance methods in similar way.

File Name :	com/bethecoder/tutorials/spring3/tests/spel/StringCaseTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.spring3.tests.spel;



import org.springframework.expression.Expression;

import org.springframework.expression.ExpressionParser;

import org.springframework.expression.spel.standard.SpelExpressionParser;



public class StringCaseTest {



  /**

   * @param args

   */

  public static void main(String[] args) {



    ExpressionParser parser = new SpelExpressionParser();

    Expression exp = parser.parseExpression("'be the coder'.toUpperCase()");

    String message = exp.getValue(String.class);

    System.out.println(message);



    exp = parser.parseExpression("'BE THE CODER'.toLowerCase()");

    message = exp.getValue(String.class);

    System.out.println(message);

  }



}

String Case