本文就此说一下java中的statement 和 expression。 statement-语句 expression-表达式 表达式(expression)是可以作为函数参数的,如:10*a; 语句(statement):不能作为函数参数,如:print(a)。 new test();是一条语句(statement)。i+1是一个表达式(expression),就像cron表达式、EL表达式、lambda表达式一样,不是statement。
statement-语句 expression-表达式 表达式(expression)是可以作为函数参数的,如:10*a; 语句(statement):不能作为函数参数,如:print(a)。 new test();是一条语句(statement)。i+1是一个表达式(expression),就像cron表达式、EL表达式、lambda表达式一样,不是statement。
import junit.framework.TestCase; import static java.lang.System.out; public class TestStatement extends TestCase { public void testStatement() { try { User user = new User(); Statement statement = new Statement(user, "setAge", new Object[] { 10 }); statement.execute(); out.println(user...
java.lang.Object java.beans.Statement java.beans.Expression public classExpressionextendsStatement Expression对象表示一个原始表达式,其中单个方法应用于目标,一组参数返回结果 - 如"a.getFoo()"。 除了超类的属性之外,Expression对象还提供了一个值,该值是在计算此表达式时返回的对象。返回值通常不由调用者提供,...
public interface ExpressionStatementTree extends StatementTree A tree node for an expression statement. For example: expression ; See Java Language Specification: 14.8 Expression Statements Since: 1.6Nested Class Summary Nested classes/interfaces declared in interface com.sun.source.tree.Tree Tree....
java.lang.Object java.beans.Statement java.beans.Expressionpublic class Expression extends Statement An Expression object represents a primitive expression in which a single method is applied to a target and a set of arguments to return a result - as in "a.getFoo()". In addition to the...
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