How to convert string to integer in java

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);].

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);
”

code to convert the string a into an integer b , as shown in the figure below:

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:

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

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:

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:

Related free learning recommendations: javaBasic Tutorial

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