String Length
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 getting the length of a string and byte array using SpEL.
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 StringLengthTest { /** * @param args */ public static void main ( String [] args ) { ExpressionParser parser = new SpelExpressionParser () ; Expression exp = parser.parseExpression ( "'BTC'.length()" ) ; Integer length = exp.getValue ( Integer. class ) ; System.out.println ( "String length : " + length ) ; exp = parser.parseExpression ( "'BTC'.bytes.length" ) ; length = exp.getValue ( Integer. class ) ; System.out.println ( "Byte Array length : " + length ) ; } }
String length : 3
Byte Array length : 3
