publicclassRemoveNewline{publicstaticvoidmain(String[]args){// 定义一个包含换行符的字符串StringtextWithNewline="Hello, World!\nThis is a test string.\nHave a nice day!";// 使用replace方法去除换行符StringtextWithoutNewline=textWithNewline.replace("\n"," ");// 打印去除换行符后的字符串Syst...
replaceAll方法可以使用正则表达式来替换多个字符,非常灵活。 publicclassRemoveNewlineRegexExample{publicstaticvoidmain(String[]args){StringoriginalString="Hello,\nWorld!\r\nThis is a test string.\n";StringwithoutNewline=originalString.replaceAll("[\\r\\n]","");System.out.println(withoutNewline);}} ...
return new Inter(){ public void show(){} }; } } class InnerClassDemo7 { public static void main(String[] args) { Outer.method().show(); /* Outer.method():意思是:Outer中有一个名称为method的方法,而且这个方法是静态的。 Outer.method().show():当Outer类调用静态的method方法运算结束后的...
returns the original string if there is no whitespace in the start or the end of the string Note:In programming, whitespace is any character or series of characters that represent horizontal or vertical space. For example: space, newline\n, tab\t, vertical tab\vetc. Example: Java String t...
} }; 接口情况: copy //接口publicinterfaceInterface01{voidshow(String s); }//测试类publictest {publicstaticvoidmain(String[] args){//写法一:实现接口的抽象方法newInterface01(){@Override
可以关闭setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//创建一个标签JLabel lable=newJLabel("lable就是一个文本");//获取本窗口的内容窗格Container c=getContentPane();//将lable标签组件添加到内容窗格上c.add(lable);//设置本窗口是否可见setVisible(true);}publicstaticvoidmain(String[]args){newAction...
//创建列表框JList<String>colorList=newJList<String>(colors);//创建选择相关组件JComboBox<String>colorSelect=newJComboBox<String>();ButtonGroupbuttonGroup=newButtonGroup();JRadioButtonmale=newJRadioButton("男",false);JRadioButtonfemale=newJRadioButton("女",true);JCheckBoxisMarried=newJCheckBox(...
The full version string for this update release is 1.8.0_20-b26 (where "b" means "build"). The version number is 8u20.HighlightsThis update release contains several enhancements and changes including the following:This document contains the following topics: Java Mission Control 5.4 Advanced ...
The full version string for this update release is 1.8.0_20-b26 (where "b" means "build"). The version number is 8u20.HighlightsThis update release contains several enhancements and changes including the following:This document contains the following topics: Java Mission Control 5.4 Advanced ...
newPlatformMXBeanProxy(MBeanServerConnection connection, String mxbeanName, Class<T> mxbeanInterface) 返回用于给定 MXBean 名称的平台 MXBean 接口的代理,以便通过给定 MBeanServerConnection 转发其方法调用。java.net 中IOException 的使用java.net 中IOException 的子类 class BindException 试图将套接字绑定...