无涯教程-Java - if 语句函数

50 阅读1分钟

if语句包含一个布尔表达式和一条或多条语句。

if statement - 语法

if(Boolean_expression) {
   //如果布尔表达式为真,语句将执行
}

if statement - 流程图

If Statement

if statement - 示例

public class Test {

public static void main(String args[]) { int x=10;

  </span><span class="kwd">if</span><span class="pun">(</span><span class="pln"> x </span><span class="pun">&lt;</span><span class="pln"> </span><span class="lit">20</span><span class="pln"> </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
     </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="kwd">print</span><span class="pun">(</span><span class="str">"This is if statement"</span><span class="pun">);</span><span class="pln">
  </span><span class="pun">}</span><span class="pln">

} }

这将产生以下输出-

This is if statement.

参考链接

www.learnfk.com/java/if-sta…