core java
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String
Convert String to char array
In this example we shall show you how to convert a String to char array. The String class represents character…
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String
Convert String to byte array ASCII encoding
This is an example of how to convert a String to byte array with ASCII encoding. The String class represents…
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String
Convert String to byte array UTF encoding
public static byte[] stringToBytesUTFCustom(String str) { byte[] b = new byte[str.length() << 1]; for(int i = 0; i < str.length();…
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lang
Code injection with Java Proxy example
I was using JDBC PreparedStatement’s batch updates to modify a lot of data in a database and the processing was…
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lang
MethodHandle example
public class MethodAccessExampleWithArgs { private final int i; public MethodAccessExampleWithArgs(int i_) { i = i_; } private void bar(int j,…
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math
Generate random Integer within given range
In this example we shall show you how to generate a random Integer within a given range, using random() method…
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math
Find floor value of a number
With this example we are going to demonstrate how to find the floor value of a number, using the floor(double…
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math
Find natural logarithm value of a number
This is an example of how to find the natural logarithm value of a number, using the log(double a) method…
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math
Find ceiling value of a number
In this example we shall show you how to find the ceiling value of a number, using the Math Class.…
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math
Round float and double numbers
With this example we are going to demonstrate how to round float and double numbers using round() method of Math.…
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