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 accessing java types such as class, interface and enums using SpEL. The T operator is used to get a reference to specified type.

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


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



import org.springframework.expression.ExpressionParser;

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



public class TypesTest {



  /**

   * @param args

   */

  public static void main(String[] args) {



    ExpressionParser parser = new SpelExpressionParser();

    Class clazz = parser.parseExpression("T(Integer)").getValue(Class.class);

    System.out.println(clazz);

    

    clazz = parser.parseExpression("T(Boolean)").getValue(Class.class);

    System.out.println(clazz);



    clazz = parser.parseExpression("T(char)").getValue(Class.class);

    System.out.println(clazz);



    clazz = parser.parseExpression("T(java.util.List)").getValue(Class.class);

    System.out.println(clazz);



    clazz = parser.parseExpression("T(java.util.Vector)").getValue(Class.class);

    System.out.println(clazz);



    clazz = parser.parseExpression("T(Void)").getValue(Class.class);

    System.out.println(clazz);

    

  }

}