For example, if you want to show a message 100 times, then you can use a loop. It's just a simple example; you can achieve much more with loops. In the previous tutorial, you learned about Java for loop. Here,
Java do-while loop example Here is a simple java do-while loop example to print numbers from 5 to 10. package com.journaldev.javadowhileloop; public class JavaDoWhileLoop { public static void main(String[] args) { int i = 5; do { System.out.println(i); i++; } while (i <= 10)...
Example int i = 0; while (i < 5) { System.out.println(i); i++; } Try it Yourself » Note: Do not forget to increase the variable used in the condition, otherwise the loop will never end!Exercise? How many times will the following loop execute?int i = 0;while (i < 4) ...
inti=1;do{System.out.println(i);i++;}while(i<=5); The program outputs: 12345 3. Difference betweenwhileLoop anddo-whileLoop The main difference betweendo-whileloop andwhile-loopis thatdo-whileevaluates its expression at the bottom of the loop instead of the top. Therefore, thestatements ...
The Java programming language also provides a do-while statement, which can be expressed as follows: do { statement(s) } while (expression); The difference between do-while and while is that do-while evaluates its expression at the bottom of the loop instead of the top. Therefore, the ...
do-while 循环:先执行一次循环体,然后从 i = 1 开始,每次循环 i 增加1,直到 i 不小于 5 为止。 增强型 for 循环:遍历数组中的每个元素,依次输出每个元素的值。 1.4. 跳转结构 在Java中,跳转结构用于控制程序的执行流程。 1.4.1 break 用途: 用于终止当前循环(for、while、do-while)或switch语句。
do {} while (i < max)is similar like before, only difference is that the loop body will be execute at least once. while(true) { if (i < max) {break;}}Whenever seebreak; will jump out from thewhileloop. max = 5; i = 0; ...
Note thatIterator.removeis theonlysafe way to modify a collection during iteration; the behavior is unspecified if the underlying collection is modified in any other way while the iteration is in progress. UseIteratorinstead of thefor-eachconstruct when you need to: ...
break WAF_LOOP_ONE; }else { System.out.println(i+":"+j); } } } } } 2。案例 转载:https://www.knowledgedict.com/tutorial/java-break-out-of-nested-loops.html java 如何跳出内嵌多重循环的方法主要有两种,一种是利用 Java 的 label,另一种是巧妙地将相关的循环逻辑抽出到单独的方法里,然后在...
();// a retry loop with exponential back-off delays // (this gives VM some time to do it's job) boolean interrupted = false; try { long sleepTime = 1; int sleeps = 0; while (true) { if (tryReserveMemory(size, cap)) { return; } if (sleeps >= MAX_SLEEPS) { break; } if...