测试 live writer 用

package kg.tom.chapter_five;

//异常为循环而抛
public class Loop_42 {
	
	public static void main(String[] args) {
		int [][] tests = {{6,5,4,3,2,1},{1,2},{1,2,3},{1,2,3,4},{1}};
		
		int successCount = 0;
		
		try {
			
			
			//不用使用异常控制循环，应该只为异常条件而使用异常
//			int i =0;
//			while(true){
//				if (thirdElementIsThree(tests[i++]))
//					successCount++;
//			}
//			for (int i = 0; i < tests.length; i ++){
//				if(thirdElementIsThree(tests[i]))
//					successCount++;
//				
//			}
			
			//jdk 5.0以后
			for(int[] test : tests){
				if(thirdElementIsThree(test))
					successCount++;
			}
			
			System.out.println(successCount);
			
		} catch (ArrayIndexOutOfBoundsException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		
	
	}

	private static boolean thirdElementIsThree(int[] is) {
		//注意运算符重载问题!!	
//		return is.length >=3 & is[2] == 3;
		
		//
		return is.length >=3 && is[2] == 3;
	}

}

测试一下更新……………!!!