49 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			49 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
|   | --- | |||
|  | title: Jump Statements | |||
|  | localeTitle: 跳转声明 | |||
|  | --- | |||
|  | # 跳转声明
 | |||
|  | 
 | |||
|  | 跳转语句是一种[_控制流_](https://docs.oracle.com/javase/tutorial/java/nutsandbolts/flow.html)语句。基本上,您可以使用它们来更改正常执行过程中执行语句的顺序。实质上,这些语句会导致程序控制从下一个预期执行点“跳”到程序中的另一个位置。 | |||
|  | 
 | |||
|  | 以下跳转语句通常与循环一起使用: | |||
|  | 
 | |||
|  | *   [打破](http://forum.freecodecamp.com/t/java-loops-break-control-statement) | |||
|  | *   [继续](http://forum.freecodecamp.com/t/java-loops-continue-control-statement) | |||
|  | 
 | |||
|  | 当满足条件时,'break'控制语句会跳出循环。这意味着循环的其余部分将不会运行。 例如,在下面的循环中,如果我达到5,则循环中断,因此它不会继续。 | |||
|  | 
 | |||
|  | ```java | |||
|  | for(int i=0;i<10;i++){  | |||
|  |   | |||
|  |   if(i == 5){ //if i is 5, break out of the loop.  | |||
|  |     break;  | |||
|  |   }  | |||
|  |   | |||
|  |  System.out.println(i);  | |||
|  |  }  | |||
|  | ``` | |||
|  | 
 | |||
|  | 输出: | |||
|  | ``` | |||
|  |     0 1 2 3 4  | |||
|  | ``` | |||
|  | 
 | |||
|  | 'continue'控制语句是'break'的不太强烈的版本。它只会突破当前的循环实例并继续。在下面的循环中,如果i为5,则循环继续,因此它将跳过下面的print语句并继续前进,直到我达到10并且循环停止。 | |||
|  | 
 | |||
|  | ```java | |||
|  | for(int i=0;i<10;i++){  | |||
|  |   | |||
|  |   if(i == 5){ //if i is 5, break out of the current instance loop.  | |||
|  |     continue;  | |||
|  |   }  | |||
|  |   | |||
|  |  System.out.println(i);  | |||
|  |  }  | |||
|  | ``` | |||
|  | 
 | |||
|  | 输出: | |||
|  | ``` | |||
|  |     0 1 2 3 4 6 7 8 9  | |||
|  | 
 | |||
|  | ``` |