Develop Reference

It is not going inside the first loop and only printing I am outside loop only [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 2 years ago.
Improve this question
The below code is not giving any error. After debugging i found it is not going inside the first loop.
package string_pattern;
public class Naive {
public static void main(String[] args)
{
String pattern="This is a text book";
String text="text";
child obj=new child();
obj.search(pattern, text);
}
}
class child{
public void search(String pat,String text)
{
int m,n;
m=pat.length();
n=text.length();
System.out.println("i am outside loop");
for(int i=0; i<= (n-m); i++)
{
int j;
System.out.println("i am inside first loop");
for(j=0;j<m;j++)
{
if(text.charAt(i+j) != pat.charAt(j))
{
System.out.println("OVER HERE");
break;
}
if(j==m)
System.out.println("pattern found at pos" + i);
}
}
}
}

You do the following:
m=pat.length();
n=text.length();
The problem is that text has a length of 4, while pat is longer. So when you do the loop like this -> for(int i=0; i<= (n-m); i++), you end up with a negative number. Since 0 is greater than any negative number you never enter the loop.

Why integer value gets 0 when the limit is exceeded? [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 3 years ago.
Improve this question
Why an int becomes zero when it exceed the int limit in java?
Eg:
import java.util.Scanner
public class MyClass{
public static void main(Stings [] args){
Scanner sc = new Scanner(System.in);
int x = sc.nextInt(); // enter 50 or higher.
int answer = 1;
while(x>0){
answer = answer*x;
x--;
}
System.out.println(answer);
}
}

At some point answer becomes 0 (integer overflow) and stays 0.

For statement solution [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 6 years ago.
Improve this question
I'm just really confused on why there's an error at the for statement line. This is literally code from a tutorial that I can't run because there's an error at line 3
class RoundOne{
public static void main(String[] args){
for(int i =0,i<10,i++){
System.out.println("The number is: "+i);
}
}
}

for(int i =0;i<10;i++){
System.out.println("The number is: "+i);
}
You wrote , instead of ;

In your for loop instead of
for(int i =0,i<10,i++)
write
for(int i =0;i<10;i++)

For loops use ; between the parts, not ,
class RoundOne {
public static void main(String[] args) {
for (int i = 0; i < 10; i++) {
System.out.println("The number is: " + i);
}
}
}

Error in retrieving the lenght of a string [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 7 years ago.
Improve this question
What's wrong with my code?
import java.util.Scanner;
class Pali
{
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
System.out.println("\nInserisci una stringa: ");
String p = in.next();
int n = p.lenght();
}
}
I get a "cannot find symbol" error in p variable. Why? Many thanks (sorry,if I did something wrong, it's my first post).

It's a typo:
int n = p.lenght();
Should be p.length();

It is a typo.
int n = p.lenght();
Correction: int n = p.length();
It happens to the best of us.

Use: int n = p.length(); instead of p.lenght();

Wierd String error, please be gracious, new to java [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 7 years ago.
Improve this question
So my problem is that it keeps saying I already defined String spaces up top but if I take the definition that's outside of the loop away and try to define spaces only in the loop, it tells me it hasn't been instantiated...
public class NestedLoop {
public static void main (String [] args) {
int userNum = 0;
int i = 0;
int j = 1;
String spaces = "";
Scanner scnr = new Scanner(System.in);
System.out.print("Enter userNum:");
userNum = scnr.nextInt();
for (i = 0; i <= userNum; i++) {
while (j == i){
spaces = spaces.concat(" ");
System.out.print(spaces);
j++;}
System.out.println(i);}
Error: main.java:244: spaces is already defined in main(java.lang.String[])

I just ran this code in my IDE and got no errors, compile time or run time. Not sure I can replicate the errors you're reporting. Only possibility I could think of is an error with your JDK, but at the same time I dunno how or why that would occur.