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How to make System.out.println() shorter
...pets" plugin for your favorite text editor/IDE
Static Import
import static java.lang.System.out;
out.println("Hello World");
Explore JVM languages
Scala
println("Hello, World!")
Groovy
println "Hello, World!"
Jython
print "Hello, World!"
JRuby
puts "Hello, World!"
Clojure
(println "Hello, W...
How do I make a delay in Java?
I am trying to do something in Java and I need something to wait / delay for an amount of seconds in a while loop.
8 Answer...
How to remove all white spaces in java [duplicate]
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java.lang.String class has method substring not substr , thats the error in your program.
Moreover you can do this in one single line if you are ok in using regular expression.
a.replaceAll("\\s+","");
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Android Crop Center of Bitmap
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E/AndroidRuntime(30010): Caused by: java.lang.IllegalArgumentException: x + width must be <= bitmap.width() and this because of 4 times 100px
– Stan
Jul 14 '13 at 15:03
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Java 反射最佳实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Java 反射最佳实践概要：最简单优雅的使用反射。本文的例子都可以在示例代码中看到并下载，如果喜欢请star，如果觉得有纰漏请提交issue，如果你有更好的点子...概要：最简单优雅的使用反射。
本文的例子都可以在示例代码...
How to change JFrame icon [duplicate]
I have a JFrame that displays a Java icon on the title bar (left corner).
I want to change that icon to my custom icon. How should I do it?
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Reverse a string in Java
...lder(hi).reverse().toString()
Or, for versions earlier than JDK 1.5, use java.util.StringBuffer instead of StringBuilder — they have the same API. Thanks commentators for pointing out that StringBuilder is preferred nowadays when there is no concurrency concern.
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How to wait for several Futures?
....onFailure{case i => println(i)}
// this waits one second, then prints "java.lang.ArithmeticException: / by zero"
// the first to fail in traversal order
And:
val f1 = Future { Thread.sleep(1000) ; 5 / 0 }
val f2 = Future { 5 }
val f3 = Future { None.get }
sequenceOrBailOut(List(f1,f2,f3)).on...
How to set thousands separator in Java?
How to set thousands separator in Java?
I have String representation of a BigDecimal that I want to format with a thousands separator and return as String.
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How to get the current date and time
How do I get the current date and time in Java?
10 Answers
10
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