Java 如果语句为假，有没有办法结束程序？
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Is there a way to end the program if statement is false?
提问by MrBixbite
I am a just a beginner Java programmer and I was just wondering if there is a way to end the program if the user input is false. Here is an example:
我只是一个初级 Java 程序员，我只是想知道如果用户输入为假，是否有办法结束程序。下面是一个例子：
if (age > 13) {
System.out.println("You are eligible for this site, you may proceed. ");
} else {
// End program here if statement = false
}
(Please answer with the code if you don't mind.)
（如果您不介意，请用代码回答。）
采纳答案by ImGone98
if (age > 13) {
System.out.println("You are eligible for this site, you may proceed. ");
}else{
System.exit(0);
}
This should end it!
这应该结束吧！
回答by paxdiablo
You can exit your program with System.exit().
您可以使用 退出程序System.exit()。
See http://docs.oracle.com/javase/7/docs/api/java/lang/System.htmlfor more details.
有关更多详细信息，请参阅http://docs.oracle.com/javase/7/docs/api/java/lang/System.html。
回答by knightsb
if you on main just write return;
如果你在 main 上只写 return;
回答by Dexters
if this is in main() method
如果这是在 main() 方法中
just use return
只是使用 return
if this is in another function return something back to the main like a booleanthen return
如果这是在另一个函数中，则将某些内容返回到 main 中，例如booleanthenreturn
回答by JB Nizet
This will exit the JVM.
这将退出 JVM。
System.exit(-1); // or any other status
If this is the main method, you can also simply return from it (provided you haven't started a thread):
如果这是主方法，您也可以简单地从它返回（前提是您还没有启动线程）：
return;
回答by ltalhouarne
You can end it this way:
你可以这样结束：
if (age > 13) {
System.out.println("You are eligible for this site, you may proceed. ");
}else{
System.exit(0); //code to end program
}
