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Equals() methods in JAVA [duplicate]

This question already has answers here:
when should I override Equals function? [duplicate]
(3 answers)
Closed 2 years ago.
Why Equals() method override in Java.Reasons for it?
I was not able to understand it clearly.

The java string equals() method compares the two given strings based on the content of the string. If any character is not matched, it returns false. If all characters are matched, it returns true.Whereas (==) compares the references.

Simple check operation is not working in java [duplicate]

This question already has answers here:
How do I compare strings in Java?
(23 answers)
Closed 7 years ago.
String TypedMaxNumber = MaxValue.getText();
if(TypedMaxNumber == "100")
System.out.println(TypedMaxNumber+" = 100");
I think it is a silly problem, but when I am running to run this program and I type 100 in the text Field it is not going inside the loop. What could be the reason.

I am running to run this program and I type 100 in the text Field it
is not going inside the loop.
Its
if(TypedMaxNumber.equals("100"))
Since TypedMaxNumber is of type String. equals() check for value equality

How can I do a presence check in Java? i am getting an error. [duplicate]

This question already has answers here:
How do I compare strings in Java?
(23 answers)
Closed 9 years ago.
i am trying to do a presence check in java on 10 JTextFields. I want it so that if all 10 of my textfield have something in them, it will do my code.
String input1 = tfQ1.getText();
String input2 = tfQ2.getText();
etc.
I have put
IF(input1==("")&&input2==("")&&input3==("")&&input4==("")&&input5==("")&&input6==("")&&input7==("")&&input8==("")&&input9==("")&&input10==(""))
{
//DO SCORES ETC
}
However, this doesnt do anything... (my button does not work weather there are things in the text fields or not)
Please and someone help with presence check validation? Thanks =)

instead of "==" operator you should use
input1.equals("")

if(input.equals("WhateverYouAreLookingFor")) {
//do this
}else {
//do this
}
== is a reference comparison, both objects point to the same location in memory. essentially it tests wether the two operands refer to the same object.
.equals() will only compare what is in the String. It can be overridden so two distinct objects can still be equal.

Two strings are equal but wont work on if statement [duplicate]

This question already has answers here:
How do I compare strings in Java?
(23 answers)
Closed 9 years ago.
System.out.println(characters.get(selected).getName());
// The name printed is "Mario" But the if statement will not
// work as though the two strings are diffrent but they are the same.
if(characters.get(selected).getName() == "Mario"){
playSound("sounds/clickmario.wav");
}
Comparing two strings and when I debug the comparison is "Mario" to "Mario" so the if statement should be true but its false because nothing inside the if statement is being read. Why is this happening? I have tried assigning this .getname to a tempString and comparing it but still when they are the same string the statement results as false. Please help

You have to use .equals() for string comparison in java
if(characters.get(selected).getName().equals("Mario")){
playSound("sounds/clickmario.wav");
}

Refer this for String comparison.
and
for basics of String refer this.

use
if (stra === strb)
it should work in javascript, for java
if (stra.equals(strb))
Then it should work too

filepath comparsion through if condition [duplicate]

This question already has answers here:
How do I compare strings in Java?
(23 answers)
Closed 9 years ago.
I am getting the two different path that are basically file path , injected through xml by spring ioc..
private String FilePath1; //it consists path c:\abc folder
private String FilePath2; //it consists of c:\abc\def
now I need to check that if they two are equal then they should go inside the
condition otherwise not
please advise how to achieve this..
what I have tried is ..
if (FilePath1 =! FilePath2)
{
filemove(mcrpFilePath, zipfileName); //i want if two file paths are not wqula then it // should go inside filemove
}

Use equals() to compare Java Strings. The reason for this is because Strings are objects in Java. Therefore, the == operator tests to see if two objects point to the same instance! not whether they are equal to each other.