String one, two, three;
one = two = three = "";

This should work with immutable objects. It doesn't make any sense for mutable objects for example:

Person firstPerson, secondPerson, thirdPerson;
firstPerson = secondPerson = thirdPerson = new Person();

All the variables would be pointing to the same instance. Probably what you would need in that case is:

Person firstPerson = new Person();
Person secondPerson = new Person();
Person thirdPerson = new Person();

Or better yet use an array or a Collection.

Answer from Alfredo Osorio on Stack Overflow
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W3Schools
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Java Declare Multiple Variables
Java Examples Java Videos Java ... Java Interview Q&A Java Certificate ... Note: Declaring many variables in one line is shorter, but writing one variable per line can sometimes make the code easier to read. You can also assign the same value to multiple variables in one ...
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Learneroo
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Java Assignment Shortcuts - Learneroo
There are shortcuts in Java that let you type a little less code without introducing any new control structures. Declaring and Assigning Variables You can declare multiple variables of the same type in one line of code: ... This code will set c to 5 and then set b to the value of c and finally a to the value of b.
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Declaring Multiple Variables in Java: When and How Not To
November 23, 2024 - Unlike Python, Java doesnโ€™t allow assigning individual values to multiple variables on a single line. This error message indicates that โ€œ20โ€ is expected as a variable name after the comma, not a value. There are two correct ways to approach this situation: Java prioritizes clarity and explicitness. Declaring separate variables ensures each statement focuses on a single entity, making code easier to read and understand.
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Quora
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How to assign multiple variables with one statement in the Java programming language - Quora
Answer (1 of 2): In Java, you can assign values to multiple variables in a single statement. Example: int x=13,y=15,z=15; Unlike Python, where multiple variables can be declared in the same line as in a, b, c=12, 34, 23, Java does not support ...
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DCL52-J. Do not declare more than one variable per declaration - SEI CERT Oracle Coding Standard for Java - Confluence
While not required for conformance with this guideline, this practice is also recommended in the Code Conventions for the Java Programming Language, ยง6.1, "Number Per Line" [Conventions 2009]. ... This noncompliant code example might lead a programmer or reviewer to mistakenly believe that both i and j are initialized to 1. In fact, only j is initialized, while i remains uninitialized: ... Declaring each variable on a separate line is the preferred method. However, multiple variables on one line are acceptable when they are trivial temporary variables such as array indices.
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Initializing multiple variables to the same value in Java
Initialize the variables by assigning all three variables the same value (a = b = c = 10). The value 10 is first assigned to c, then b gets the value of c, and finally, a gets the value of b. To display the values of a, b, and c we will print the values of it.
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Sarthaks eConnect
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Java Declare Multiple Variables - Sarthaks eConnect | Largest Online Education Community
Learn how to declare multiple variables in Java using the 'int' keyword and other data types ... and tips for efficient variable declaration in Java.
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Java Tutorial
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Java Declare Multiple Variables - Java Tutorial
June 7, 2025 - In this example, we assign the value 100 to the variables x, y, and z in one line. The println() method then prints the sum of x, y, and z, which is 300. Declaring Multiple Variables: Use a comma to declare multiple variables of the same type in one line.
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Declare Multiple Variable in Java - Forget Code
Multiple variables can be declared in declaration block of for loop. public class MultipleVariables { public static void main(String[] args) { for(int i=0, j=1, k=2 ; i<5 ; i++) System.out.println("I : " + i + ",j : "+ j + ", k : " + k); } } ... Contribute to Forget Code, help others.
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Java multiple variables declaration | by 24blognews | Medium
October 31, 2023 - } } Copy the above code and run, if everything goes well in code, following out is displayed agent_rank : 2 agent_age : 30 agent_id_number : 7 ... visit below and keep practicing. https://www.roseindia.net/java/ #multiplevariable #javavariables #coding
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Declaring Multiple Private Variables (Beginning Java forum at Coderanch)
Welcome to JavaRanch! After your access modifier (private) and type (int), you can declare multiple variables in the same line (before the ending semicolon) by separating them with commas.
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OCA Java SE 8 Building Blocks - Variables
To initialize a variable, you just type the variable name followed by an equal sign, followed by the desired value: ... You can declare and initialize multiple variables in the same statement.
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How to Initialize Multiple Variables in Java | Delft Stack
February 14, 2024 - Initially, a variable named commonValue is declared and assigned the desired value (30). This single point of reference is then utilized to initialize three integer variables (a, b, and c). By doing so, we minimize redundancy and enhance code clarity. The initialized values of these variables are subsequently displayed on the console. This approach, known as the common value method, proves to be a simple and readable technique for achieving uniform initialization in Java.
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W3Docs
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Initializing multiple variables to the same value in Java
This code initializes an int variable, x, to the value 10, a double variable, y, to the value 10.0, and a long variable, z, to the value 10L.
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InformIT
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38. Do not declare more than one variable per declaration | Java Coding Guidelines for Reliability | InformIT
// Correct functional implementation public String toString() { String s = a.toString() + b.toString(); for (int i = 0; i < c.length; i++){ s += c[i].toString(); } s += d.toString(); return s; } This compliant solution places each declaration on its own line and uses the preferred notation for array declaration: public class Example<T> { private T a; // Purpose of a... private T b; // Purpose of b... private T[] c; // Purpose of c[]... private T d; // Purpose of d... public Example(T in){ a = in; b = in; c = (T[]) new Object[10]; d = in; } } Declaration of multiple variables per line can reduce code readability and lead to programmer confusion.
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Declare and assign values to multiple variables in a single line (Core Java Interview Question #151) - YouTube
Can we declare and assign values to multiple variables in a single line in Java (Core Java Interview Question #151)For any doubts, live training updates and ...
Published ย  February 4, 2024
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