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How to convert string to integer in java

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Release: 2023-01-13 00:39:49
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Java method to convert a string into an integer: first enter a numeric string; then convert it through [Integer.parseInt()], the code is [String s="123456";int b=Integer.parseInt (s);].

How to convert string to integer in java

The operating environment of this tutorial: windows7 system, java10 version, DELL G3 computer. This method is suitable for all brands of computers.

Java method of converting a string into an integer:

In the first step, enter the

“
String s="123456";
int b=Integer.parseInt(s);
System.out.println(b);
”
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code to convert the string a into an integer b , as shown in the figure below:

How to convert string to integer in java

After running the program in the second step, you can see that the string is successfully converted into the integer type 123456, as shown in the figure below:

How to convert string to integer in java

In the third step, we can also convert through Integer.valueOf(s), as shown in the figure below:

How to convert string to integer in java

The fourth step Run the program and you can see that the string is successfully converted into integer data, as shown in the figure below:

How to convert string to integer in java

The fifth step should be noted that using the above two methods to convert characters When converting a string into an integer, the string needs to be a numeric string, otherwise an error will be reported, as shown in the following figure:

How to convert string to integer in java

Related free learning recommendations: javaBasic Tutorial

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