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Is there a way to clear multiple lines of text printed in the console with Java?
I'm trying to print 2 pictures made with text that are slightly different and replace each other in a loop. Thus, I want to print a multiline string and then clear the screen before printing the next string. However, I don't know how to clear the screen.
I've already tried using \r, but that doesn't work because it's multiple lines.
u/sellithy on reddit helped me out with this link
and the block of code that worked for me was
System.out.print("\033[H\033[2J");
System.out.flush();
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I'm writing a simple program where I can change a piece of text. For example printing text "This is a problem with xxx" and I could delete "xxx" and place my own text there. "xxx" representing a default value.
I tried searching but I think I'm using the wrong search terms or I just don't understand the answers.
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I was learning flowcharts, wanted to show this code in a flowchart, wanted to print infinite times without declaring a counter. please note I haven't declared any counter.
for (;;){
System.out.println("helloworld");
} }
An infinite loop is like any other loop an arrow that goes back to a previous point.
Usually, you still place a condition (rhombus/diamond shape) at the start of the loop as usual, but there is only one outgoing path.
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I am trying to extract an object from a JSText String in Java.
Regex that I am using (more accurate at this moment):
PJ\s?[=:]\s?\{(.*\s*\})
This is the demo:
https://regex101.com/r/hlkEUc/3
If you appreciate, at the end its the full code in single line form. This is captured without problems but in the middle of the text you can see the regex is trying capture the same object but it's broken due the line break.
Object to extract:
var PJ={yF:function(a,b){var c=a[0];a[0]=a[b%a.length];a[b]=c},It:function(a){a.reverse()},yp:function(a,b){a.splice(0,b)}};
I think you probably want this: PJ\s?[=:]\s?\{(.*[\r\n].*?)*?\};.
Regex
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I'm debugging an application and realized that the debugger displays String[] in two different ways, namely these two: ['test'] and [test]. Those displayed in the second way work for my purpose and the other doesn't.
What's the difference between these two?
It sounds like in the first case, the single quote characters are part of the string. Try adding code to remove them.
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im stuck on a simple question, i want to display formatted text in a swing control and keep on adding new values into it, i don't want to use .setText(.getText + text) for personal reasons, (something like the append method for text area is what I am looking for) I've tried JEditorpane, Textpane but all of them do not have append method. Which swing control should I use?
While JEditorPane has no append method, you can certainly add text to its Document via its insertString(...) method, and I suggest that you look into doing this.
Edit
You ask:
it worked it out but it seems it works like setText, all the previous data vanishes.. how do i keep the previous data ?
Are you correctly passing in the first parameter, the offset? This should be the length of the current Document.