NullPointerExceptionnpe=newNullPointerException("Custom error");StringerrorStr=null;try(StringWritersw=newStringWriter();PrintWriterpw=newPrintWriter(sw)){npe.printStackTrace(pw);errorStr=sw.toString();}catch(IOExceptione){thrownewRuntimeException("Error while converting the stacktrace");}System.out.pri...
用Throwable.printStackTrace(PrintWriter pw)可以输出堆栈信息: StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); t.printStackTrace(pw); sw.toString(); // stack trace as a string 答案三 StringWriter sw = new StringWriter(); e.printStackTrace(new PrintWriter(sw)); Stri...
package com.test1; import java.io.PrintWriter; import java.io.StringWriter; public class T010 { /** * @param args */ public static void main(String[] args) { try { String[] arr = {"111", "222"}; arr[2] = "fff"; } catch (Exception e) { String info = getErrorInfoFromExcepti...
把字符串转换为一个基本数据类型parseInt()静态方法) 把一个字符串转化为Integer类,toString(int i)返回一个String 把一个字符串转换为Integer类, valueOf 其它封装类也是如此,Boolean比较不同! (基本数据类型,封装类,String类型转换) 只能建立一个只读的封装类,其值是不可改变的 Class文件 Point pt=new Point()...
[Android.Runtime.Register(".ctor", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V", "")] public StackTraceElement(string? declaringClass, string? methodName, string? fileName, int lineNumber); Parameters declaringClass String ...
reflection use without configuration.Warning:Use-H:+ReportExceptionStackTraces to print stacktraceofunderlying exception---0.7s(5.0%oftotal time)in14GCs|PeakRSS:1.94GB|CPUload:6.07===
fastJson的toJSONString解读 先从一个小问题上我们抛砖引玉一下 首先我们先做准备工作 我们声明一个bean public class YunmiStoreStr { public String gome; public YunmiStoreStr(String gome) { this.gome = gome; } } 1. 2. 3. 4. 5. 6. ...
27String str =null;2829//String转Date30str = "2007-1-18";31try{32date =format1.parse(str);33data =format2.parse(str);34}catch(ParseException e) {35e.printStackTrace();36}37/**38* 获取现在时间39*40* @return返回字符串格式 yyyy-MM-dd HH:mm:ss41*/42publicstaticString getStringDate...
printStackTrace(); } /** * 获取现在时间 * * @return返回字符串格式 yyyy-MM-dd HH:mm:ss */ public static String getStringDate() { Date currentTime = new Date(); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String dateString = formatter.format(currentTime...
}catch(IOException e) {//TODO Auto-generated catch blocke.printStackTrace(); } } 二. String转换为InputStream 转换过程需要借助ByteArrayInputStream读取字符串的字节码,ByteArrayInputStream是InputStream的子类,强制转换即可。 代码如下: String template="abcdef"; ...