replaceall

问题 I have a problem with the replaceAll for a multiline string: String regex = "\\s*/\\*.*\\*/"; String testWorks = " /** this should be replaced **/ just text"; String testIllegal = " /** this should be replaced \n **/ just text"; testWorks.replaceAll(regex, "x"); testIllegal.replaceAll(regex, "x"); The above works for testWorks, but not for testIllegal!? Why is that and how can I overcome this? I need to replace something like a comment /* ... */ that spans multiple lines. 回答1: You need to use

问题 I have the string "MO""RET" gets stored in items[1] array after the split command. After it get's stored I do a replaceall on this string and it replaces all the double quotes. But I want it to be stored as MO"RET . How do i do it. In the csv file from which i process using split command Double quotes within the contents of a Text field are repeated (Example: This account is a ""large"" one"). So i want retain the one of the two quotes in the middle of string if it get's repeated and ignore

问题 I have the string "MO""RET" gets stored in items[1] array after the split command. After it get's stored I do a replaceall on this string and it replaces all the double quotes. But I want it to be stored as MO"RET . How do i do it. In the csv file from which i process using split command Double quotes within the contents of a Text field are repeated (Example: This account is a ""large"" one"). So i want retain the one of the two quotes in the middle of string if it get's repeated and ignore

问题 I want to use the $1 value like an integer. The idea is to replace all numbers from originaltext with the equivalent array values and create a new text. The below desired outcome should be "This is DBValue4, This is DBValue2, This is DBValue7" Also, is there a way to save these backreferences for further use? String[] values = {"DBValue0","DBValue1","DBValue2","DBValue3","DBValue4","DBValue5","DBValue6","DBValue7","DBValue8","DBValue9","DBValue10"}; String originaltext = "This is 4, This is 2

问题 I want to find replace part of what is matched. Example: this is awesome look at this two letter words get replaced the return would be this <h1>is</h1> awesome look <h1>at</h1> this two letter words get replaced Notice how the is and at which would match regex \b\w\w\b would be matched are replaced. This is the code I was working on. It's not finished but I am just a little confused and wondering if there is an easier way. I was searching the string and finding the matches. Then I was adding

问题 I have used string.replaceAll() in Java before with no trouble, but I am stumped on this one. I thought it would simply just work since there are no "/" or "$" characters. Here is what I am trying to do: String testString = "__constant float* windowArray"; String result = testString.replaceAll("__constant float* windowArray", "__global float* windowArray"); The variable result ends up looking the same as testString. I don't understand why there is no change, please help. 回答1: The first

问题 So, let's say I got my regular expression String regex = "\d*"; for finding any digits. Now I also got a inputted string, for example String input = "We got 34 apples and too much to do"; Now I want to replace all digits with "", doing it like that: input = input.replaceAll(regex, ""); When now printing input I got "We got apples and too much to do". It works, it replaced the 3 and the 4 with "". Now my question: Is there any way - maybe an existing lib? - to get what actually was replaced?

问题 I am new to java but not programming in general. I've been trying to understand Java String replaceAll...specifically I am reading in Strings from a text file...an example would be "I JUMP UP HIGH IN THE AIR TO GET TO YOU." 1) I want to change "I" to "A" where I is not the beginning of a word, and 2) U to "O" where U is at the end of a word. Any help would be appreciated. (Also, if you can point me to a good tutorial on the topic [I learn best by looking at examples] that would be appreciated

问题 I have oldId and newId and I want to replace oldId with newId . public static void main(String[] args) { String jsonString = "{\"user_id\":{\"long\":876},\"client_id\":{\"int\":0},\"affinity\":[{\"try\":{\"long\":55787693},\"scoring\":{\"float\":0.19}},{\"try\":{\"long\":1763},\"scoring\":{\"float\":0.0114}}]}"; // some other json strings - // String jsonString = "{\"user_id\":{\"string\": \"876\"},\"client_id\":{\"int\":0},\"affinity\":[{\"try\":{\"long\":55787693},\"scoring\":{\"float\":0

问题 I was using String.replaceAll(String, String) when I noticed that replacing a string with $ symbols around it would not work. Example $REPLACEME$ would not be replaced in a Linux system. Anyone know why this is? Some code: String foo = "Some string with $REPLACEME$"; foo = foo.replaceAll("$REPLACEME$", "characters"); System.out.println(foo); Output: Some string with $REPLACEME$ 回答1: $ is a special character that needs to be escaped: foo = foo.replaceAll("\\$REPLACEME\\$", "characters"); Or