Infix to Postfix JavaThe infix and postfix expressions can have the following operators: '+', '', '%','*', '/' and alphabets from a to z. The precedence of the operators (+, ) is lesser than the precedence of operators (*, /, %). Parenthesis has the highest precedence and the expression inside it must be converted first. In this section, we will learn how to convert infix expression to postfix expression and postfix to infix expression through a Java program. For performing the conversion, we use Stack data structure. The stack is used to store the operators and parenthesis to enforce the precedence Start parsing the expression from left to right. Before moving ahead in this section, ensure that you are friendly with the stack and its operations. Let's have a look at infix and postfix expressions. Infix ExpressionInfix expressions are those expressions in which the operator is written inbetween the two or more operands. Usually, we use infix expression. For example, consider the following expression. Postfix ExpressionPostfix expressions are those expressions in which the operator is written after their operands. For example, consider the following expression. Infix vs Postfix Expression
Infix to Postfix Conversion ExampleConvert the (X  Y / (Z + U) * V) infix expression into postfix expression.
Algorithm
Let's implement the above algorithm in a Java program. Java Program to Convert Infix Expression into Postfix ExpressionInfixToPostfixConversion.java Output: Postfix to Infix Conversion ExampleConvert the AB + CD  / postfix expression into infix expression.
Algorithm
Let's implement the above algorithm in a Java program. Java Program to Convert Postfix Expression into Infix ExpressionPostfixToInfixConversion.java Output:
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