Content about : Java array
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Java Example Code For Using Array
package example;
public class JavaArray {
public void javaArray(){
//Create Array
String array[]={”A”,”B”,”C”};
String array2[][]={{”A”,”B”},{”C”,”D”}};
//Using Array
System.out.println(”Array vaue is :”+array[1]);
System.out.println(”Array vaue is :”+array2[1]);
System.out.println(”Array vaue is :”+array2[1][1]);
}
public static void main(String args[]){
JavaArray array=new JavaArray();
array.javaArray();
}
}
Running Result
Array vaue is :B
Array vaue is :[Ljava.lang.String;@7d772e
Array vaue is 
Note : Array index Start with 0 eg. array[0] is “A”
** Result at line 2 is Array in Array ^^
** Result at line 3 is : D T_T it ’s the same emotion Ha Ha Ha
Development
Basic Java, java-common
Content about : Java String to int
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Example for Convert String to int with Java
package example;
public class StringToIntExample {
public void stringToInt(String input){
try {
//Convert with Integer.parseInt(input);
int intvalue=Integer.parseInt(input);
System.out.println(”int value:”+(intvalue+100));
//Convert with Integer.valueOf(input);
int intvalue2=Integer.valueOf(input);
System.out.println(”int value:”+(intvalue2+200));
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
public static void main(String args[]){
StringToIntExample stringToIntExample=new StringToIntExample();
stringToIntExample.stringToInt(”500″);
}
}
Running Result
int value:600
int value:700
**If String value sent to stringToInt method not NumberFormat it will throws Exception **
java.lang.NumberFormatException: For input string: “500q”
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:456)
at java.lang.Integer.parseInt(Integer.java:497)
at example.StringToIntExample.stringToInt(StringToIntExample.java:7)
at example.StringToIntExample.main(StringToIntExample.java:18)
Development
Basic Java, java, java-error, java-number-format, protected-abstract-method