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I am new to Java and am from Python. In Python we do string formatting like this: >>> x = 4 >>> y = 5 >>> print("{0} + {1} = {2}".format(x, y, x + y)) 4 + 5 = 9 >>> print("{} {}".format(x,y)) 4 5 How do I replicate the same thing in Java? The MessageFormat class looks like what you're after. System.out.println(MessageFormat.format("{0} + {1} = {2}", x, y, x + y)); Daniel Kaplan Java has a String.format method that works similarly to this. Here's an example of how to use it. This is the documentation reference that explains what all those % options can be. And here's an inlined example: package

话不多说，先看下要实现的效果，如图所示，为tinymce增加一个默认提示文字，光标移入，文字消失 1. 需要借助tinymce的一个插件plugin.js，以下为plugin.js的源码，可以直接复制到自己的文件夹中 tinymce.PluginManager.add('placeholder', function(editor) { editor.on('init', function() { let label = new Label; onBlur(); tinymce.DOM.bind(label.el, 'click', onFocus); editor.on('focus', onFocus); editor.on('blur', onBlur); editor.on('change', onBlur); editor.on('setContent', onBlur); editor.on('keydown', onKeydown); function onFocus() { if (!editor.settings.readonly === true) { label.hide(); } editor.execCommand('mceFocus', false); } function onBlur() { if (editor.getContent() == '')

I'd like to add an image icon to an input placeholder, like in this picture: Please note that this is a placeholder, so when the user starts typing, the icon also disappears. I came with the following solution for webkit (Safari+Chrome) using ::-webkit-input-placeholder and ::before . Unfortunately, the straightforward application to mozilla seems not to work. So my question is: is there a cross-browser solution to add an image icon to an input placeholder? Solution for webkit: #myinput::-webkit-input-placeholder::before { content: ' '; position: absolute; top: 2px; /* adjust icon position */

将Keras作为tensorflow的精简接口 在tensorflow中调用Keras层 让我们以一个简单的例子开始：MNIST数字分类。我们将以Keras的全连接层堆叠构造一个TensorFlow的分类器， import tensorflow as tf sess = tf.Session() from keras import backend as K K.set_session(sess) 然后，我们开始用tensorflow构建模型： # this placeholder will contain our input digits, as flat vectors img = tf.placeholder(tf.float32, shape=( None , 784 )) 用Keras可以加速模型的定义过程： from keras.layers import Dense # Keras layers can be called on TensorFlow tensors: x = Dense( 128 , activation= 'relu' )(img) # fully-connected layer with 128 units and ReLU activation x = Dense( 128 , activation= 'relu' )(x) preds =

What is the difference between <asp:Panel > and <asp:PlaceHolder > in ASP.NET? When should you use one over the other? A panel expands to a span (or a div), with it's content within it. A placeholder is just that, a placeholder that's replaced by whatever you put in it. The Placeholder does not render any tags for itself, so it is great for grouping content without the overhead of outer HTML tags. The Panel does have outer HTML tags but does have some cool extra properties. BackImageUrl: Gets/Sets the background image's URL for the panel HorizontalAlign: Gets/Sets the horizontal alignment of

I'm loading properties attributes from a .properties file using Spring as follows: file: elements.properties base.module.elementToSearch=1 base.module.elementToSearch=2 base.module.elementToSearch=3 base.module.elementToSearch=4 base.module.elementToSearch=5 base.module.elementToSearch=6 The spring xml file file: myapplication.xml <bean id="some" class="com.some.Class"> <property name="property" value="#{base.module.elementToSearch}" /> </bean> And my Class.java file: Class.java public void setProperty(final List<Integer> elements){ this.elements = elements; } But when debugging, the parameter

How to change the color of placeholder when focus the input field? I use this css to set the default color, but how to change it on focus? ::-webkit-input-placeholder { color: #999; } /* Firefox < 19 */ :-moz-placeholder { color: #999; } /* Firefox > 19 */ ::-moz-placeholder { color: #999; } /* Internet Explorer 10 */ :-ms-input-placeholder { color: #999; } Try this, this should work : input::-webkit-input-placeholder { color: #999; } input:focus::-webkit-input-placeholder { color: red; } /* Firefox < 19 */ input:-moz-placeholder { color: #999; } input:focus:-moz-placeholder { color: red; } /*